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The Best Classic Southern Yellow Squash Casserole with Buttery Ritz Cracker Topping

A close-up of a rich, creamy slice of squash casserole with a thick, browned crumble topping.
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Welcome! You need this recipe for the ultimate comfort food side dish. This Southern squash casserole is creamy, cheesy, and topped with a buttery, crunchy Ritz cracker crust. It is simple to make and perfect for holidays or potlucks.

Ingredients

Scale
  • 4 pounds yellow squash, thinly sliced
  • 1 medium onion, finely chopped
  • 1 cup sharp cheddar cheese, shredded
  • 1 cup sour cream
  • 1/2 cup mayonnaise
  • 2 large eggs, lightly beaten
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 1/4 teaspoon garlic powder
  • 1 sleeve (about 20) Ritz crackers, crushed
  • 1/2 cup unsalted butter, melted

Instructions

  1. Preheat your oven to 375 degrees F. Lightly grease a 9×13 inch baking dish.
  2. Place the sliced yellow squash and chopped onion in a large pot. Cover with water and bring to a boil. Cook for about 5 to 7 minutes until the squash is tender. Drain the squash and onions very well. Press out as much excess water as you can.
  3. In a large bowl, combine the drained squash and onions, cheddar cheese, sour cream, mayonnaise, eggs, salt, pepper, and garlic powder. Mix everything until it is fully combined.
  4. Spread the squash mixture evenly into your prepared baking dish.
  5. In a small bowl, mix the crushed Ritz crackers with the melted butter until the crumbs are coated. Sprinkle this buttery cracker topping evenly over the squash mixture.
  6. Bake for 25 to 30 minutes, or until the casserole is hot and bubbly and the topping is golden brown.
  7. Let the casserole rest for 5 minutes before you serve it.

Notes

  • You can prepare this easy squash casserole ahead of time. Assemble the casserole completely, cover it, and refrigerate it for up to 24 hours before baking. Add 5 to 10 minutes to the baking time if baking directly from the refrigerator.
  • For a slightly different flavor, substitute half of the cheddar cheese with Monterey Jack or Gruyere cheese.
  • This cheesy squash casserole is a great make ahead casserole for busy holiday schedules.

Nutrition

Find it online: https://devourdish.com/best-classic-southern-squash-casserole/