Peppermint Swirl Brownies Recipe Nov 23, 2022 · Bake for 30 to 35 minutes, rotating the pan at the halfway point. At the 25 minute mark, sprinkle the remaining 1/3 cup of candy over the top of the brownies. The brownies are ready when a cake tester inserted into the brownie—not the swirl—comes out with a few moist crumbs—do not over bake.