While I've consistently baked these brownies in around 20 minutes, oven performance can differ, so it's good to have multiple ways to check for doneness. Use a Timer: Typically, these brownies take between 20-25 minutes to bake. Start by setting a timer for 20 minutes so you can monitor them closely as they near completion. Toothpick or Knife Test: To see if the brownies are done, insert a toothpick or the tip of a sharp knife into the center. If it comes out with wet batter, they need more time. If it comes out clean, they're ready. Visual Cues: Ideal brownies will appear slightly underbaked in the center, as they continue to cook while cooling. If the edges are dry and the middle looks a bit underdone, it's time to take them out of the oven.