Vegan Chocolate Tart
This vegan chocolate tart is a no-bake dessert with an Oreo-and-walnut crust and a rich dark chocolate ganache set with coconut milk and coconut oil. It comes together with a food processor and a fridge, no oven required, and it slices into something so decadent that people never guess it is dairy-free. If you want one showstopping chocolate dessert to make for a party, a picnic, or just a much-deserved treat, this is the one.
I made this one afternoon when I had some free time on my hands and a serious craving to feed, and it has stayed one of my favorites ever since. I mean it: it is so good that you won’t even believe something this delicious came out of your own hands. Having the power to personally control everything you put in your food really makes a difference, which is why I will always prefer a home-baked tart to a store-bought one. If you are a chocolate person like I am, you will probably end up memorizing this recipe by heart.
What goes into this tart
Everything here is plant-based, and each ingredient is doing a specific job. The Oreos are blended whole, cream filling and all, so the biscuit and the sugary center become one paste that binds the crust without any added sweetener. Coconut oil is the glue: half firms up the crust in the fridge, and the rest goes into the ganache to help it set. Canned coconut milk is the secret to the smooth filling, but only the thick part counts, so chill the can overnight and scoop the solid cream off the top, leaving the watery liquid behind.
Use a good vegan dark chocolate you would happily eat on its own, because it carries the whole tart. A tablespoon of espresso powder deepens the chocolate without making it taste like coffee, while lemon zest and a little vanilla lift the richness so it never turns flat. The walnuts fold through the ganache and scatter on top for crunch against all that silk.
Why the coconut milk method works
The reason you use only the thick cream from a chilled can, and not the whole thing, is water. The watery layer at the bottom would thin out the ganache and stop it from setting firm, leaving you with a filling that stays soft even after hours in the fridge. The solid coconut cream is mostly fat, so it emulsifies with the melted chocolate and coconut oil into a glossy, sliceable ganache once it cools. That is also why the tart needs at least four hours, or overnight, in the fridge: the coconut oil and cocoa butter both need cold time to firm the filling into clean layers.
Tips for a tart that sets and slices cleanly
- Press the crust firmly and evenly into the tray. A loosely packed crust crumbles when you cut it, so use the back of a spoon or a flat glass to compact it into the corners.
- Melt the chocolate gently and stir the coconut milk in off the heat. Overheating can make the ganache grainy or split, so go slow and mix until it looks creamy and uniform.
- Do not rush the chilling. If the filling still wobbles, give it more time. Overnight is best for the firmest set.
- For clean slices, warm the knife under hot water and wipe it between cuts. A warm blade glides through the chilled ganache instead of dragging and cracking it.
Easy swaps and variations
- Nuts: swap the walnuts for pecans, hazelnuts, or toasted almonds. Any of them work through the ganache and on top.
- Crust: any vegan sandwich cookie works in place of Oreos if you want a different flavor base.
- No coffee: the espresso powder is there for depth, not a coffee taste, but you can leave it out if you prefer.
- Citrus: orange zest in place of lemon gives a warmer, chocolate-orange note.
If you love how simple this is, I have a whole collection of vegan sugar-free desserts in the same spirit, plus a lighter vegan fruit tart for when you want something fresher.
Make-ahead and storage
This tart is a dream to make ahead, since it needs the fridge time anyway. Make it a day before you need it and keep it covered in the refrigerator, where it holds beautifully for up to four or five days. Because the filling is set with coconut oil and chocolate, it softens quickly at room temperature, so keep it chilled until just before serving and take it out only ten minutes or so ahead for the cleanest slices. It also freezes well: wrap slices individually and freeze for up to a month, then thaw in the fridge overnight.
It travels well too, which is why it earns a spot on my list of go-to vegan picnic recipes. If you are building a whole dessert spread, pair it with an easy chocolate mousse and a batch of raw almond chocolate truffles for a table that leans fully into chocolate.
I think tarts are one of the perfect forms of dessert, and I can’t really see any downsides to this one, though maybe I am biased since it is such a favorite of mine. If you make it, please rate the recipe below and leave a comment telling me how your ganache set and whether you stuck with walnuts or tried a different nut. I always love hearing how it turned out in your kitchen.
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Vegan Chocolate Tart
Ingredients
- 25 pieces Oreo biscuits
- 1 cup coconut oil melted
- 1 cup coconut milk canned, refrigerated, thick part only
- 3 cups vegan dark chocolate melted
- 1 cup walnuts
- 1 tbs espresso powder instant coffee
- 1 tsp lemon zest
- ½ tsp vanilla extract
Instructions
- Blend the Oreos (with the cream) in a food processor until a paste is formed.
- In a bowl, mix the crushed cookies with half of the melted coconut oil, espresso powder, and lemon zest.
- Transfer the mixture to a tray and form the crust making sure to press well.
- Melt the chocolate, add the coconut milk, the rest of the coconut oil and vanilla extract. Mix well until creamy.
- Add most of your walnuts to the ganache.
- Pour the mixture over the crust, sprinkle the remaining nuts and cool in the fridge for at least 4 hours or overnight.
- For clean slices, warm up the knife under hot water.
Frequently Asked Questions
Yes. Every ingredient is plant-based: standard Oreos, coconut oil, canned coconut milk, vegan dark chocolate, walnuts, espresso powder, lemon zest, and vanilla. There is no butter, cream, eggs, or honey anywhere in the recipe. Just double-check that your dark chocolate is certified dairy-free, since some brands add milk.
No, this is a no-bake tart. The crust is pressed together with melted coconut oil and firms up in the fridge, and the ganache filling sets in the cold as well. You only need a food processor to blend the crust and gentle heat to melt the chocolate. It needs at least four hours of chilling, or overnight, to set fully.
The thick coconut cream that rises to the top of a chilled can is mostly fat, which is what lets the ganache emulsify and set firm. The watery layer at the bottom would thin the filling and keep it from setting properly. Refrigerate the can overnight, then scoop off the solid cream and leave the liquid behind.
Give it at least four hours in the fridge, though overnight gives the firmest, cleanest slices. The coconut oil and cocoa butter both need cold time to solidify the filling. If the center still wobbles when you check it, it simply needs more chilling time.
Warm your knife under hot running water, wipe it dry, then slice. A warm blade glides through the cold ganache instead of dragging and cracking it. Wipe and re-warm the knife between cuts for the neatest edges, and serve the tart straight from the fridge.
Yes, it is ideal for making ahead since it needs the fridge time anyway. Keep it covered in the refrigerator for up to four or five days, or freeze individually wrapped slices for up to a month and thaw overnight in the fridge. Because it softens at room temperature, keep it chilled until just before serving.
One of the best chocolate cakes I ever tried, thank you for the recipe!
Super delicious and easy to make!