Enhance a brownie mix with rich hazelnut flavor by adding McCormick® Hazelnut Flavor to the batter and the canned chocolate frosting.
Prepare brownie mix as directed on package. Stir in hazelnut flavor and chocolate chips. Spread in greased 13x9-inch baking pan.
Bake and cool as directed on package.
Meanwhile, for the Hazelnut Frosting, mix frosting and hazelnut flavor until well blended. Spread on cooled brownie. Cut into squares.