Creating Old-School Squash Casserole is simple with these step-by-step instructions:

1. Preheat Oven: Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking dish.
2. Sauté Vegetables: In a large pan, sauté the sliced yellow squash and chopped onion in a bit of butter until they are tender. This should take about 5-7 minutes.
3. Combine Ingredients: In a mixing bowl, combine the sautéed vegetables, shredded cheddar cheese, sour cream, melted butter, eggs, sugar, salt, and pepper. Mix well until all ingredients are thoroughly combined.
4. Prepare the Topping: In a separate bowl, mix the crushed crackers with a bit of melted butter.
5. Pour Mixture into Dish: Pour the squash mixture into the greased baking dish and spread it evenly.
6. Add the Topping: Sprinkle the crushed cracker mixture evenly over the top of the squash casserole.
7. Bake: Place the casserole in the preheated oven and bake for 35-40 minutes, or until the top is golden brown and the casserole is set.
8. Cool: Remove from the oven and allow it to cool for about 5-10 minutes before serving.

Following these steps will help you create an incredible Old-School Squash Casserole that’s sure to be a hit!