6 tablespoons butter 1 cup firmly packed brown sugar 2 large eggs 1 teaspoon vanilla extract 1 cup all-purpose flour 1/2 teaspoon baking powder 1/4 teaspoon salt 1/2 cup chocolate or peanut butter flavored chips
Combine melted butter and brown sugar; stirring until dissolved. Beat in eggs and vanilla. In another bowl, combine flour, baking powder, and salt. Add to the butter mixture. Spread the batter evenly in a well-buttered 9-inch square pan. Sprinkle chips over the top. Bake at 350*F. for 25 to 30 minutes, or until the center is set. Cool before cutting.
