Southern Living's most popular potluck recipe, Squash Casserole, is a classic Southern classic recipe that is easy to make year-round. The recipe involves a quick sauté in butter, combining with seasonings and cheese, creating a rich, comforting side that takes you back in all the right ways. The secret to this recipe is to remove the water from the squash, which is then concentrated on the flavor of the squash. Despite this, some readers have found creative ways to enhance this recipe.