Chocolate mocha cupcakes with Oreo cookie crust and Nutella buttercream icing. Cupcake recipe: Chocolate fudge box cake mix. Put cupcake liners in cupcake pans, put an Oreo in each cup. Make batter from box instructions. I added 2 tablespoons instant espresso powder/instant coffee to make the cupcakes mocha flavor. Frosting recipe: 3 cups powdered sugar, 2 sticks of softened butter, 1/2 cup of nutella. Beat until fluffy.