Ingredients
Scale
- 1 cup plus 1 tbsp (150g) all-purpose flour
- ⅓ cup (28g) cocoa powder
- ½ teaspoon baking powder
- ½ teaspoon baking soda
- ¾ cup (150g) granulated sugar
- ¼ teaspoon salt
- 1 large egg
- ¼ cup (60ml) oil
- ⅓ cup (80ml) whole milk
- 1 teaspoon (5ml) pure vanilla extract
- ½ cup (120ml) hot coffee
- 5 oz (142g) marshmallows
- 3 tablespoon (42g) unsalted butter
- 1 cup (273ml) 35% heavy whipping cream
- 5 oz (142g) semisweet dark chocolate
- ⅓ cup plus 1 tbsp (95ml) 35% heavy whipping cream, cold from the fridge
- 1 teaspoon (7ml) honey or corn syrup
Instructions
- Preheat oven to 325°F and line an 8×8-inch baking pan with parchment paper, allowing a 2-inch overhang.
- Sift the flour, cocoa powder, baking powder, and baking soda into a bowl. Add sugar and salt, whisk together.
- Make a well in the dry ingredients and add oil, egg, milk, and vanilla. Whisk until combined. Slowly add hot coffee and mix until smooth.
- Pour batter into the prepared pan and bake for 20-25 minutes until a skewer comes out clean. Cool completely in the pan.
- To create the filling, melt butter with marshmallows in the microwave, stirring until smooth. Let cool to room temperature.
- Whip cold cream until stiff peaks form. Mix half into the cooled marshmallow until loosened, then fold in the rest gently.
- Slice the cooled cake in half horizontally. Spread marshmallow cream over the bottom layer and place the second layer on top. Chill in the fridge.
- For ganache, heat cream with honey, pour it over chopped chocolate, and whisk until smooth. Pour over the cake, letting it drizzle down the sides.
- Using the reserved marshmallow cream, pipe loops across the top of the cake. Slice to serve.
Notes
Ensure the marshmallow mixture is cool before adding whipped cream to avoid melting.
Use an offset spatula to spread the marshmallow cream evenly for a smooth finish.
The ganache sets quickly, so work fast when pouring it over the cake.
Nutrition
- Serving Size: 1 slice
- Calories: 320
- Sugar: 24g
- Sodium: 180mg
- Fat: 18g
- Saturated Fat: 5g
- Unsaturated Fat: 9g
- Trans Fat: 0g
- Carbohydrates: 38g
- Fiber: 1g
- Protein: 4g
- Cholesterol: 20mg
Nutritional information is an estimate. The nutritional values for your final dish may vary based on measuring differences and products used.