Whether mixed with marshmallow, fruit, nuts and more, here you’ll find the best sweet potato casserole recipes. Sweet potato casserole is a comfort food favorite and a colorful addition to any table. For Thanksgiving, that includes pumpkin pie, Cranberry Salad, and this sweet potato casserole recipe. Then remove the foil and continue to cook for an additional 20 minutes or until the top of the sliced sweet potato casserole is golden brown and crusty. But when it comes to the holidays, I will admit that there are a few recipes that have to be on my table for it to feel like a holiday. The Best Sweet Potato Casserole Recipe. I love trying new recipes. This sweet potato and apple casserole with bacon, cheese and herb infused custard is silky and flavorful. Cover the savory sweet potato casserole with tin foil and bake for 40 minutes.