Mocha Cupcakes - Cupcakes by Amélie

Ingredients

• 2 1/4 sticks unsalted butter (room temp)
• 1 cup granulated sugar
• 1 cup brown sugar
• 3 large eggs (room temp)
• 3 teaspoons vanilla extract
• 1 1/2 cup buttermilk (room temp)
• 3/4 cup sour cream (room temp)
• 3 tablespoons brewed coffee
• 3 cups all-purpose flour
• 1 cup cocoa powder
• 3 tablespoons coffee grounds (finely ground)
• 2 1/4 teaspoons baking soda
• 3/4 teaspoon salt