This chocolate mint cake recipe delivers a rich, deep chocolate flavor that melts smoothly on the tongue. The peppermint adds a cool, refreshing note that balances the sweetness of the cake and buttercream frosting.Moist and tender layers create a soft texture that feels indulgent, while the mint buttercream provides a creamy, slightly sweet topping that enhances the chocolate without being sharp.
Turn on your oven to 350°F (175°C). Grease two 9-inch round pans, place parchment on the bottom, and lightly flour the sides.
Sift the flour, cocoa powder, sugar, baking powder, baking soda, and salt together in a bowl. Mix so everything is even.
Whisk the eggs, milk, vegetable oil, vanilla, and peppermint together in a separate bowl until smooth.
Slowly stir the egg mixture into the dry ingredients, mixing gently until it comes together. Don’t stir too much. Add the boiling water carefully. The batter will be thin, which is normal and makes the cake soft.
Split the batter between the two pans and bake for 35–40 minutes. Test with a toothpick—if it comes out clean, it’s done. Let the cakes sit in the pans for 10 minutes before moving them to a wire rack to cool completely.
To make the frosting, beat softened butter until creamy. Mix in powdered sugar a little at a time. Add cream (or milk), peppermint, and food coloring, beating until fluffy. Adjust with more sugar or cream if needed.
Place one cake layer on a plate and spread frosting over it. Put the second layer on top and cover the whole cake with frosting. Decorate as you like. Chill for about 30 minutes to make cutting easier.