PRO TIP- This recipe was made in an 8-inch square baking pan, but if you’re baking for a bigger crowd—or appetite— these recipes can easily be doubled to bake in a 13×9-inch baking pan. Simply double the recipe ingredients and, as a rule, increase your bake time by 5 to 10 minutes. Don’t be nervous about the bake time wiggle room. Just be sure to use our visual test for doneness: a wooden pick inserted in center should come out with a few moist crumbs.