Easy Vegan Chocolate Cake

Method

1. Preheat your oven to 175°C (350°F). Lightly grease a 6-inch (15 cm) round cake tin with a small amount of coconut oil and line the base with a circle of parchment paper.

   5 min

2. In a small bowl or jug, combine the oat milk and apple cider vinegar. Stir briefly and set aside for 5 minutes — this creates a plant based 'buttermilk' that activates with the baking soda for a light, fluffy crumb.

   5 min

3. In a large mixing bowl, sift together the all-purpose flour, cocoa powder (¼ cup / 60 ml), granulated sugar, baking soda, and salt. Whisk dry ingredients together until evenly combined with no lumps.

   3 min

4. Melt the coconut oil gently if solid — microwave in 20-second bursts or place the jar in a bowl of warm water. Once melted, add it to the oat milk mixture along with the vanilla extract. Stir well to combine.

   3 min

5. Pour the wet ingredients into the dry ingredients and stir gently with a spatula or wooden spoon until just combined. Do not overmix — a few small lumps are perfectly fine. Overmixing develops gluten and can result in a tough, dense cake.

   2 min

6. Pour the batter into the prepared cake tin and smooth the top with a spatula. Bake in the preheated oven for 28–32 minutes, or until a toothpick inserted into the centre comes out clean with just a few moist crumbs.

   30 min

7. Remove the cake from the oven and allow it to cool in the tin for 10 minutes before turning out onto a wire rack. Let it cool completely before frosting — frosting a warm cake will cause the icing to slide off.

   15 min

8. While the cake cools, make the chocolate frosting. Gently melt the dark chocolate chips in a heatproof bowl over a pan of simmering water (double boiler), stirring constantly. Remove from heat once smooth.

   5 min

9. Sift the powdered sugar and remaining 2 tablespoons (30 ml) of cocoa powder into the melted chocolate. Add the maple syrup and 2 tablespoons (30 ml) of oat milk. Stir until you have a thick, glossy frosting. If too thick, add oat milk a teaspoon at a time; if too thin, add a little more powdered sugar.

   5 min

10. Once the cake is fully cooled, spread the chocolate frosting generously over the top and sides using a spatula or butter knife. Slice into portions and serve. For a birthday presentation, add fresh berries, a dusting of cocoa powder, or colourful sprinkles on top.

    5 min

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Tips

• Make sure your coconut oil is fully melted and slightly cooled before adding it to the oat milk mixture — hot oil can react unevenly with the other ingredients.
• Do not skip the apple cider vinegar step — it reacts with the baking soda to give the cake its lift and keeps it moist without eggs.
• Sifting the cocoa powder is important as it tends to clump; sifting ensures an even, lump-free batter.
• Allow the cake to cool completely before frosting — patience here makes a big difference in the final presentation.
• For an ultra-moist crumb, you can substitute half the oat milk with strong brewed black coffee — it deepens the chocolate flavour beautifully without tasting like coffee.

Variations

• Add 1 teaspoon (5 ml) of finely grated orange zest to the batter and a few drops of orange extract to the frosting for a classic flavour pairing.
• This recipe is already nut-free — just double-check your dark chocolate chips are produced in a nut-free facility if allergies are a concern.
• Substitute the all-purpose flour with a 1:1 gluten-free baking flour blend for a gluten-free cake.
• Replace half the oat milk with cooled strong espresso to create a rich mocha-flavoured chocolate cake.
• Pour the batter into a lined muffin tin to make 4–6 cupcakes — reduce baking time to 18–22 minutes.

Notes

This recipe is scaled for 2 generous servings using a 6-inch (15 cm) cake tin. To make a full-size 8-inch (20 cm) layer cake for a larger party, simply triple all ingredient quantities and divide between two 8-inch (20 cm) tins. Store any leftovers in an airtight container at room temperature for up to 2 days, or refrigerate for up to 5 days. The frosted cake can also be frozen for up to 1 month — wrap individual slices in cling film before freezing.