As with most quick breads, continue baking until an inserted toothpick or cake tester comes out mostly clean with a few moist crumbs. If the bread has a crack down the top, stick the toothpick in there to check for doneness. The bread will continue to cook and set in the loaf pan after removing from the oven, so don’t wait until a toothpick comes out 100% clean or it’s going to overcook.