An easy squash casserole recipe consists of yellow summer squash, onion, Parmesan and Cheddar cheese, sour cream and a few additional ingredients. This recipe serves six to eight people and takes 40 minutes to complete.
To prepare the squash casserole, preheat the oven to 350 degrees Fahrenheit and grease a two-quart casserole dish. In a large skillet, heat a tablespoon of vegetable oil over medium heat. Then saute 6 thinly sliced, medium yellow summer squashes, a large thinly-sliced Vidalia onion and 1 tablespoon of butter until the squash and onion are tender. Put this mixture in a bowl and add in 1/2 a cup of grated Parmesan cheese, 1 cup of shredded sharp Cheddar and 1/2 a cup of sour cream and stir until well-combined. Add salt and pepper to taste.
Place this mixture in the casserole dish and sprinkle 1 sleeve of crushed crackers over the top. You can also substitute French-fried onions or wheat crackers in place of the original crackers. Bake the casserole for about 20 minutes or until the top is golden-brown and bubbly. For more vegetables, you can add in spinach and zucchini. For a meat version, you can add in ground beef or turkey meat.