Instructions:

1. Preheat and Prep: Preheat your oven to 350°F (175°C). Grease a baking dish.
2. Sauté Squash: In a skillet, sauté sliced squash and chopped onion in butter until tender. Drain any excess liquid.
3. Cheesy Mixture: In a large bowl, combine shredded cheddar cheese, sour cream, mayonnaise, beaten eggs, sugar, salt, and pepper. Mix well.
4. Combine and Layer: Add the sautéed squash and onion to the cheesy mixture. Stir until evenly combined. Pour the mixture into the prepared baking dish.
5. Cracker Topping: Sprinkle the crushed buttery crackers evenly over the top of the casserole.
6. Bake to Golden Perfection: Bake in the preheated oven for 25-30 minutes or until the top is golden brown and the casserole is set.
7. Garnish and Serve: Optional: Garnish with fresh parsley before serving. Delight in the Southern goodness of this Squash Casserole!