Ingredients:
- 1 cup all-purpose flour
- 1/2 cup unsweetened cocoa powder
- 1 tsp baking powder
- 1/2 tsp baking soda
- 1/4 tsp salt
- 3/4 cup granulated sugar
- 1 large egg
- 1/2 cup buttermilk (or milk + 1 tsp vinegar)
- 1/4 cup vegetable oil
- 1 tsp vanilla extract
- 3/4 cup brewed coffee (cooled)
- 1/2 tsp peppermint extract
- 8 oz cream cheese (softened)
- 4 cups powdered sugar
- 4 tbsp unsalted butter (softened)
- 2 tbsp milk
- 1 tsp peppermint extract