23 mai 2025

How to make a no-bake vegan cheesecake that actually sets

A no-bake vegan cheesecake comes down to three things, and two of them are usually explained badly. Agar has to boil before it dissolves, and it then sets somewhere between 32 and 42 °C, which means pouring boiling agar into a cold filling gives you threads and lumps rather than a smooth cream. Soaking cashews overnight on the worktop leaves 200 g of wet, nutrient-rich food sitting in the bacterial danger zone for eight hours, when the fridge does exactly the same job. And the vegan version is not automatically lower in saturated fat than the cream cheese original: coconut oil carries 82.5 g per 100 g against 51.4 g for butter.

All three points are worked through below with sources. Everything else is ordinary pastry work.

The short version

Agar has to reach a rolling boil to dissolve. It then sets between 32 and 42 °C and only melts again above roughly 60 °C. That gap between setting and melting is called thermal hysteresis.
Adding it: pour the boiling gelling liquid into a room-temperature filling, never a cold one, with the blender running.
Soaking: in the fridge at 0 to 5 °C, not on the counter.
Keeping it: 48 hours in the fridge for a homemade filling, following the general Food Standards Agency rule on leftovers.
Allergy: cashew is the leading tree nut trigger of anaphylaxis in children in the European registry, often at doses under a teaspoon. Always announce this cake.
Nutrition: this is not a light dessert and not a low saturated fat one. It is simply dairy-free.

What a no-bake cheesecake actually has to do

A baked cheesecake sets gently in the oven: egg and cheese proteins coagulate and trap the water. Without an oven you have to build that structure another way, using three levers together.

The first is fat that is solid when cold. Coconut oil is liquid at 25 °C and firm at 5 °C, which makes it a very effective setting agent, at the nutritional cost discussed further down. Cashew butter does the same job more quietly.

The second is reducing free water. A cashew cream blended really fine holds water inside a network of protein and fibre. This is why a powerful blender genuinely changes the outcome, while a stick blender leaves a grainy texture that shows up the moment you slice.

The third is the gelling agent. This is where most online recipes give instructions too vague to reproduce.

Agar, properly explained

Agar is extracted from red seaweeds, mainly of the Gracilaria and Gelidium genera. Its gelling fraction, agarose, forms a network of helices as it cools.

The thermal behaviour is the crux. A 2026 review in PeerJ puts it plainly: mixed with water, agar solidifies into a gel at 32 to 42 °C and only melts again when heated above 60 °C, so the hysteresis sits around 40 to 60 °C. A comparative study cited in a Comprehensive Reviews in Food Science and Food Safety paper measured setting temperatures of 36.4 and 38.1 °C on two Gracilaria species, with melting points of 54.3 and 60.6 °C.

Three practical consequences follow.

You genuinely have to boil it. Agar that is merely hot is not dissolved, only suspended. It will not gel, or will gel partly, and you end up with liquid on top and a firm deposit at the bottom. Hold a proper rolling boil for thirty seconds to a minute, whisking.

It sets very fast on cooling. Between 42 °C and 32 °C there is not much room. Pour 80 ml of boiling liquid into 500 g of fridge-cold cream and the local temperature crashes below the setting point instantly, so the agar seizes into threads before it can disperse. This is the single most common failure, and it cannot be undone: once set, those lumps do not re-blend, they just break into smaller lumps.

The dessert holds up at room temperature. Unlike a gelatine dessert, which starts slumping around 30 °C, an agar cheesecake stays firm on a summer table. That is a real advantage on a buffet and rarely mentioned.

How much to use

Research on plant-based jellies works around 1.5 % agar by weight per volume of water for a firm, sliceable gel. A cheesecake filling is not a water jelly: it already contains around 40 % fat plus a good load of solids, which give structure on their own. So you need considerably less.

In practice, on a 700 to 800 g filling, 2 g of powdered agar, roughly a level teaspoon, gives a creamy set that slices cleanly. Four grams gives a firm, almost custard-like texture. Beyond that the dessert turns brittle and starts weeping, a syneresis effect the same literature ties directly to dose and gel strength.

The only reliable way to check before committing the whole batch is the saucer test: put a spoonful of the hot mixture on a cold plate and wait two minutes. What you see on the saucer is what you will get in the tin, only slightly softer.

One useful note for sweet variants: the Comprehensive Reviews in Food Science and Food Safety review points out that some agars are described as “sugar-active”, with sucrose strengthening the gel. A heavily sweetened filling will therefore set a little firmer than a lightly sweetened one at the same dose.

What about other setting agents

Cornflour and arrowroot are often offered as alternatives in no-bake recipes. That is a contradiction: these starches only gelatinise when taken to around 90 °C and held there, and undercooked starch leaves a distinctive floury taste. If you want to use them you are making a plant-based pastry cream that you then pour over the base, which is a good recipe but no longer really a no-bake cheesecake.

Cashew butter alone can be enough if you accept a raw cheesecake texture, dense and buttery, served very cold. It softens as soon as it spends twenty minutes at room temperature. If you are weighing up the options, our guide to gelling without gelatine using agar compares doses by application, and the piece on jellies and jams without gelatine covers acidic preparations.

Soaking cashews, and why it belongs in the fridge

Every recipe agrees on soaking: it softens the cell walls and lets you blend fine. Almost all of them say “several hours or overnight” without saying where.

Once submerged, 200 g of cashews form a wet, nutrient-rich medium at close to neutral pH. The UK Food Standards Agency defines the bacterial danger zone as 8 to 63 °C and recommends keeping the fridge between 0 and 5 °C. A kitchen in summer rarely drops below 22 °C at night. Eight to twelve hours of soaking on the counter therefore means a full night right in the middle of the growth range, on a food that will never be heated afterwards, because the dessert is uncooked.

The fix is simple and changes nothing about the result: soak in the fridge. Allow eight to twelve hours, since the cold slows absorption. If you are in a hurry, pour boiling water over the nuts, leave thirty minutes, drain, then chill. Always rinse under fresh water before blending, and throw the soaking water away.

The same reasoning applies to the finished mixture. Do not let the filling sit out while you decorate: the FSA advises cooling food and getting it into the fridge within one to two hours.

The base recipe, with the numbers

For a 20 cm springform tin, eight slices.

The base

150 g vegan biscuits, or 100 g nuts and 50 g pitted dates
50 g melted coconut oil, or 60 g almond butter
1 pinch of salt

Blend to a sand that clumps when you press it between two fingers. If the mix stays powdery, add fat a spoonful at a time, not water. Press into the bottom of the tin with the back of a spoon or the base of a glass, then chill while you make the filling. A well-pressed, properly cold base is what gives you a clean slice.

The filling

250 g soaked, drained cashews
200 g silken tofu, or 200 g thick coconut cream
80 to 100 g maple syrup
40 ml lemon juice
1 teaspoon vanilla extract
1 pinch of salt
100 ml plant milk
2 g powdered agar

Blend the first six ingredients until perfectly smooth. That takes two to three minutes with a couple of stops to scrape down the sides. Taste and adjust now, not later: once the agar is in, it is too late.

Here is the step that decides everything. Bring the 100 ml of plant milk to the boil with the agar, whisking, and hold the boil for a minute. Meanwhile run the blender at medium speed on the cream, which should be at room temperature rather than straight from the fridge. Pour the boiling liquid into the running blender in a thin stream. The thin stream plus the agitation is what prevents localised setting. Blend fifteen seconds more and pour into the tin straight away.

Straight away means straight away. You have two or three minutes before the surface starts to set.

Setting

Tap the tin on the worktop to release bubbles, smooth the top with a spatula, cover with cling film touching the surface and refrigerate for at least four hours. Agar reaches its final firmness quickly, unlike gelatine: after four hours, what you have is what you get.

Run a thin warm knife around the edge before releasing the springform. Add fresh fruit as you serve, not the night before, or it bleeds juice into the filling.

What this dessert is worth nutritionally

This is where vegan recipes are most often wrong. They claim the cheesecake contains less saturated fat than a traditional one. The data do not support that.

According to the USDA’s FoodData Central, coconut oil contains 82.5 g of saturated fat per 100 g, against 51.4 g for salted butter and 20.2 g for cream cheese. The NHS explicitly lists coconut oil and coconut cream among foods high in saturated fat, alongside butter and hard cheese. Swapping butter for coconut oil lightens nothing: gram for gram it raises the saturated fat load.

The World Health Organization recommends that no more than 10 % of total energy intake come from saturated fat, and that free sugars stay under 10 % of energy intake, which works out at about 50 g a day on a 2000 kcal diet. Maple syrup, agave syrup, coconut nectar and coconut sugar are all free sugars under that definition. Being unrefined does not take them out of the category. Our look at sugar and glycaemic index claims goes into that very common confusion.

That said, the ingredient-by-ingredient picture is more nuanced than the finished cake. Again from FoodData Central, 100 g of raw cashews provide 553 kcal, 43.8 g of fat of which only 7.78 g is saturated, 18.2 g of protein, 3.3 g of fibre, 6.68 mg of iron and 37 mg of calcium. A filling built mainly on cashews, with no added coconut oil, really is lower in saturated fat than a cream cheese one. The 100 g of Medjool dates in the base bring 6.7 g of fibre and 64 mg of calcium.

So the honest conclusion has two halves. This is not a health food and does not become one by being plant-based. It is a rich cake and deserves to be treated as such. But if you do want to cut its saturated fat, the lever is neither the sugar nor the nuts: it is the coconut oil and coconut cream. A cashew and silken tofu version with no coconut sets perfectly well on 2 g of agar. The Swiss dietary recommendations from the FSVO place sweets and salty snacks in the eat-in-moderation category rather than banning them.

Cashew allergy deserves to be taken seriously

A recipe built on 250 g of cashews is not a trivial thing to bring to a family meal or a buffet.

An analysis of the European Anaphylaxis Registry published in Allergy in 2025 examined 1389 cases of tree nut anaphylaxis out of 5945 registered food reactions between 2007 and April 2024. Among children, cashew topped the list of triggers with 334 cases, ahead of hazelnut and walnut. The authors flag three things that matter here: the cashew share rose over the period, reactions were frequently triggered by small amounts under a teaspoon, and only 23 % of the children involved knew about their allergy beforehand.

In practice: always announce tree nuts when you take this cake somewhere, and do not rely on allergic guests flagging themselves, because many do not know. The NHS notes that a food allergy reaction can affect any part of the body, and that swelling of the lips, mouth or throat, breathing difficulty or sudden collapse means calling emergency services immediately.

For a nut-free version, replace all the cashews with 400 g of well-drained firm silken tofu plus 80 g of sunflower seed butter, keeping the same agar dose. The texture is a little less buttery but entirely convincing. Our guide to cooking without gluten, nuts or soy covers cross-substitutions when several allergens are in play, and the page on aquafaba desserts offers lighter alternatives.

Storage, plainly

Recipes routinely promise 3 to 5 days in the fridge, with no conditions attached. That is optimistic for a homemade, unpasteurised wet nut purée handled by hand.

The Food Standards Agency advises eating leftovers within 48 hours or freezing them, and keeping the fridge between 0 and 5 °C. Apply the same rule here: two days, covered or filmed, in the coldest part of the fridge rather than the door.

Many recipes simply advise against freezing. That is overstated. The FSA describes a freezer at around −18 °C as a pause button: bacteria are not killed but stop multiplying. A cashew and coconut oil cheesecake freezes very well in individually wrapped slices for three months. Thaw overnight in the fridge, never on the counter. What does suffer is a filling heavy on silken tofu, which can weep a little on thawing. That is a texture problem, not a safety one.

Variations that work

Lemon. Replace 60 ml of the plant milk with lemon juice and add the zest of one unwaxed lemon. One warning: do not replace most of the liquid with juice, as some recipes suggest. A strongly acidic medium plus a heavy load of citrus fibre destabilises the set. Keep the agar in the non-acidic part of the liquid, boil it, then combine.

Chocolate. Fold 120 g of dark chocolate, melted and cooled to around 45 °C, into the cream before the agar. Chocolate provides its own structure as it cools, so drop the agar to 1.5 g to avoid a brittle texture. Our vegan chocolate guide explains which couvertures melt cleanly.

Berries. Blend 150 g of fruit into the cream and cut the plant milk by 50 ml to compensate for the added water. Without that adjustment the filling is too soft.

Coconut and passion fruit. Swap the tofu for thick coconut cream. Be aware you are pushing the saturated fat content up substantially, for the reasons above.

Speculoos and caramel. A vegan speculoos base gets you very close to a brasserie cheesecake. Add the caramel as you serve, or it migrates into the filling.

Ten recurring mistakes

Heating the agar without bringing it to the boil. It will not gel.
Pouring boiling agar into a cold cream, which produces threads you cannot rescue.
Stopping to taste and adjust after adding the agar, when setting has already begun.
Measuring agar by the spoonful instead of weighing it. Teaspoons vary by a factor of two depending on how fine the powder is.
Soaking cashews overnight on the counter instead of in the fridge.
Using a stick blender. The cream will stay grainy.
Not pressing the base firmly enough, so it crumbles when sliced.
Releasing the tin straight from the fridge without running a knife round the edge.
Adding fresh fruit the night before, which soaks the surface.
Serving the cake without mentioning the tree nuts.

Adapting to different situations

Children and buffets. Make a nut-free version if you do not know every guest, or keep the two cakes clearly apart with separate servers. Cross-contact matters as much as the ingredient list.

Soy allergy. Swap silken tofu for coconut cream and allow slightly longer chilling.

Cutting saturated fat. Almond butter base rather than coconut oil, and a cashew and silken tofu filling with no coconut. The difference per slice is real.

Cutting sugar. Drop to 60 g of maple syrup and make up the sweetness with 60 g of Medjool dates blended into the cream. You keep the sweetness and gain fibre. Our festive desserts without refined sugar take that logic further.

Budget. Cashews are expensive. A filling that is half silken tofu and half cashew works very well and nearly halves the cost.

The environmental argument, with numbers

It usually gets made without any. Here are some. Using Our World in Data figures derived from Poore and Nemecek, a kilogram of cheese accounts for roughly 23.9 kg of CO2 equivalent across the whole supply chain, against 3.2 kg for tofu and 0.4 kg for nuts. The gap is large and points the way you would expect.

Two caveats though. A vegan cheesecake contains far less “cheese” by mass than its dairy equivalent actually does, so the honest comparison is whole cake against whole cake, not ingredient against ingredient. And cashew production raises documented social questions about shelling conditions that a carbon figure alone does not capture.

Frequently asked questions

My cheesecake did not set. Now what? If the agar never boiled there is no clean rescue: melt the whole thing down in a pan, boil for a minute and pour it back. If the agar did boil but the dose was too low, do the same and add 1 g.

Can I use gelatine instead of agar? Technically yes, but gelatine is animal-derived and the dessert stops being vegan. The doses are not interchangeable and the result melts again around 30 °C.

How far ahead can I make it? The day before is ideal. Beyond 48 hours in the fridge, freeze it.

Why is my filling weeping? That is syneresis, and it is almost always too much gelling agent. Cut the agar by 0.5 to 1 g next time.

Do I really need a powerful blender? For a cashew filling, yes. With a modest machine, go for silken tofu, which smooths out effortlessly, as covered in our piece on sweet silken tofu desserts.

Will it survive on a table in summer? Yes, that is agar’s advantage, since it only melts above 60 °C. It does not excuse you from the one to two hour limit out of the fridge that the FSA recommends.

I do not have a springform tin. Line a straight-sided tin with baking paper, leaving two crossed strips hanging over the edge to lift the cake out. Or assemble it in glasses, as in our no-bake vegan desserts and our selection of raw desserts.

What do I do with the pulp if I make my own plant milk? It works well in the base, at up to about 30 %. See reusing almond pulp. For desserts made in batches, our guide to batch cooking creams and flans without gelatine applies the same gelling principles.