Mint Chocolate Cake (Grasshopper Cake)
Adapted from Dinner, then Dessert (Sabrina Snyder)
Ingredients
Cake
- 2 cup 400 g sugar
- 1 3/4 cup 220 g flour
- 1 cup 85 g unsweetened cocoa powder
- 1 1/2 tsp baking powder
- 1 1/2 tsp baking soda (bikarbonat)
- 1 tsp salt
- 2 large eggs
- 1 cup 240 ml whole milk
- 1/2 cup 120 ml vegetable oil
- 1 tbsp 15 ml vanilla extract
- 1 cup 240 ml hot coffee (or boiling water)
Mint frosting
- 4 cup 480 g powdered sugar (florsocker)
- 1 cup 227 g unsalted butter, softened
- 2/3 tsp mint extract
- 3-4 drops green food colouring
- 2-3 tbsp ~40 ml milk
Method
- Cake
- Heat the oven to 175°C (350°F). Butter both 23cm (9") pans and dust with cocoa powder instead of flour, so there's no white residue on the finished cake.
- In a stand mixer on low, combine the sugar, flour, cocoa, baking powder, baking soda, and salt.
- In a separate bowl, whisk the eggs, milk, oil, and vanilla. Add to the dry mixture on low, then medium speed, mixing only until it comes together.
- Add the hot coffee by hand with a spatula — the batter is thin at this stage and the mixer will throw it out of the bowl. Stir just until incorporated.
- Divide evenly between the two pans. Bake 30–35 minutes, until a skewer comes out with a few moist crumbs.
- Cool in the pans for 10 minutes, then turn out onto a rack and cool completely. The layers must be at room temperature before frosting or the buttercream will slump.
- Mint frosting
- Beat the powdered sugar, butter, and mint extract in a stand mixer on medium until light and fluffy.
- Add the milk one tablespoon at a time, stopping as soon as the frosting spreads easily with a spatula — the amount needed varies with butter temperature.
- Add the green food colouring one drop at a time on medium speed until you reach the shade you want.
Notes
- This frosting is scaled to 2/3 of the original recipe (which is written for cupcake quantities) — still a comfortable amount for filling, covering, and a little piping.
- Mint extract intensity varies by brand — if the mint level was right last time, err generous.
- Milk is a range, not a fixed amount — treat it as a texture adjustment, added to feel rather than measured exactly.
- Butter should be at room temperature and dent when pressed, not greasy or melting — cold butter leaves lumps that never fully beat out at this size.
- Frosting freezes well for up to 3 months in an airtight container. Thaw in the fridge overnight, then re-whip briefly to bring the texture back.