10ozbag chocolate mint pieceslike the ones they sell at Christmas :)
Instructions
Heat oven to 350° and grease brownie pan (13x9 or 9x9)
Place butter in a large microwave-safe bowl and heat until melted
Stir in sugar and vanilla
Add eggs, one at a time, beating with a spoon after each one
Add cocoa and mix until well blended
Add flower, baking powder and salt, stirring well until blended
You can mix the candy bar pieces in with the batter now, or create a "layer" of candy bars chunks in the center by pouring half the batter in the pan, topping with candy chunks and covering with the rest of the batter.
Pour batter into prepared pan
Bake for 30-35 minutes if using a 13x9 inch pan, 45 minutes for a square pan (or until brownies begin to pull away from the sides of the pan)
For even more mint flavor, cover the warm brownies with chocolate mint baking pieces until softened, then spread to smooth out and create frosting. Cool completely before serving (you can put them in the refrigerator to harden the chocolate layer on top more quickly.