This Easy Yellow Squash Casserole Recipe is a creamy, cheesy Southern classic made with fresh squash, onions, and buttery crackers. It's a simple and comforting dish that pairs perfectly with any main course and is ideal for holidays, potlucks, or weeknight dinners.
4 cups sliced yellow squash
1/2 cup chopped onion
1 cup shredded cheddar cheese
1/2 cup sour cream
1/4 cup mayonnaise
1 large egg, beaten
1 cup crushed Ritz crackers (divided)
2 tbsp butter, melted
Salt and pepper to taste
Preheat oven to 350°F (175°C).
Boil squash and onions in water until tender, about 8–10 minutes. Drain well.
In a large bowl, mix squash, onions, cheese, sour cream, mayonnaise, egg, and half the crackers. Season with salt and pepper.
Pour mixture into a greased baking dish.
Mix remaining crackers with melted butter and sprinkle on top.
Bake for 25–30 minutes or until golden and bubbly.
You can use a mix of yellow squash and zucchini.
Add a pinch of garlic powder or paprika for extra flavor.
Let it rest a few minutes before serving for better texture.