Mint Brownies

Name: Mint Brownies
Prep time: 15 min
Cook time: 1 h
Total time: 1 h 30 min
Yield: 12
Ingredients: Ingredients; Brownies; 1/2 cup unsalted butter, melted; 1 cup granulated sugar; 2 large eggs; 1 teaspoon vanilla extract; 1/3 cup cocoa powder; 1/2 cup all-purpose flour; 1/4 teaspoon baking powder; 1/4 teaspoon salt; Mint Layer; 1/4 cup unsalted butter, softened; 1 1/2 cups powdered sugar; 1 tablespoon milk; 1/2 teaspoon peppermint extract; 2-3 drops green food coloring (optional); Chocolate Topping; 1/2 cup semisweet chocolate chips; 2 tablespoons unsalted butter