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Creamy Squash Casserole Recipe with Crispy Ritz Topping Easy and Perfect

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A comforting and easy creamy squash casserole topped with a buttery, crispy Ritz cracker crust. Perfect for potlucks, holidays, or weeknight dinners.

Ingredients

Scale
  • 4 cups yellow squash, thinly sliced
  • 2 cups zucchini, thinly sliced (optional)
  • 4 tablespoons unsalted butter, melted
  • 1 ½ cups Ritz crackers, crushed
  • ½ cup onion, finely chopped
  • 2 cloves garlic, minced
  • 3 tablespoons all-purpose flour
  • 1 ½ cups whole milk
  • ½ cup sour cream
  • 1 cup shredded cheddar cheese
  • Salt and pepper, to taste
  • Fresh parsley, chopped (optional, for garnish)

Instructions

  1. Preheat oven to 350°F (175°C). Lightly grease a 9×13-inch casserole dish with butter or non-stick spray.
  2. Rinse and thinly slice yellow squash and zucchini if using. Set aside.
  3. In a medium skillet, melt 1 tablespoon butter over medium heat. Add chopped onion and minced garlic; sauté until translucent and fragrant, about 4-5 minutes.
  4. In a separate saucepan, melt 3 tablespoons butter over medium heat. Stir in flour and cook for about 2 minutes to form a roux.
  5. Slowly whisk in milk, stirring until sauce thickens and is smooth, about 5 minutes.
  6. Remove from heat and stir in sour cream and shredded cheddar cheese until melted. Season with salt and pepper.
  7. In a large mixing bowl, combine sliced squash and sautéed onions and garlic. Pour creamy cheese sauce over and gently fold to coat.
  8. Transfer mixture to prepared casserole dish and spread evenly.
  9. Crush Ritz crackers finely but not to powder. Mix cracker crumbs with 3 tablespoons melted butter until coated.
  10. Sprinkle cracker topping evenly over casserole.
  11. Bake for 30-35 minutes until topping is golden and crispy and casserole is bubbling around edges. Tent with foil if topping browns too quickly.
  12. Let casserole rest for 5-10 minutes before serving to set.

Notes

Sauté onions and garlic to enhance flavor. Crush Ritz crackers to medium-fine texture for even browning. Tent casserole with foil if topping browns too fast. Let casserole rest after baking for best texture. For gluten-free, substitute flour and crackers accordingly. For vegan, use plant-based butter, dairy-free milk, sour cream, cheese, and vegan crackers.

Nutrition

Keywords: squash casserole, creamy squash casserole, Ritz cracker topping, easy casserole, comfort food, holiday side dish, potluck recipe

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