Fudgy, rich brownies meet an oreo crust and get topped with a buckeye layer and more chocolate! Buckeye Oreo Brownies Ingredients For the Crust: 20 Oreos 1/4 cup butter, melted For the Brownies: 2 ounces unsweetened baking chocolate, coarsely chopped 2 ounces semi-sweet baking chocolate, coarsely chopped 3/4 cup unsalted butter 1 3/4 cups sugar