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Rich and Moist Chocolate Cake with Fudge Frosting

The BEST Vegan Chocolate Cake with Avocado Fudge Frosting

The best one-bowl chocolate cake is accidentally vegan! Topped with avocado fudge frosting, this cake is rich, moist, and decadent. Perfect for Valentine's Day!
Prep Time 15 mins
Cook Time 35 mins
Total Time 21 hrs 35 mins
Course Cake
Cuisine Vegan


  • 1 ½ cups 200 g flour
  • 1 cup 220 g sugar
  • cup 40 g cocoa powder
  • 1 tsp baking soda
  • ½ tsp salt
  • ¼ cup oil
  • 1 cup cold coffee can use water or any type of milk instead
  • 1 tbsp apple cider vinegar
  • 1 tsp vanilla

Avocado Fudge Frosting

  • 3 ripe avocados pitted and removed from skins
  • 5 cups 600 g powdered sugar
  • 1 ⅔ cups 200 g cocoa powder
  • 1 tsp vanilla


  • Preheat oven to 350 degrees F. Grease a 9 x 13 inch baking pan or 5 mini cake pans.
  • Whisk together flour, sugar, cocoa powder, baking soda, and salt to a large mixing bowl. Add oil, coffee, vinegar, and vanilla. Whisk until smooth. Pour the batter into prepared cake pans.
  • If using mini cake pans, place on a large baking sheet. Bake for 35-40 minutes, or until a wooden skewer insterted into the center comes out with just a few crumbs.
  • Cool cake 10 minutes in pan before inverting onto a wire rack to cool completely.
  • To make the frosting, place the avocados into the bowl of a food processor. Blend until smooth. Add powdered sugar, cocoa powder, and vanilla. Process until combined.
  • Top cooled cakes with frosting and serve.
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