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Crispy Cheesy Squash Casserole Recipe with Easy Ritz Cracker Topping

crispy cheesy squash casserole - featured image

A warm, cheesy, and crunchy squash casserole featuring a buttery Ritz cracker topping that transforms humble squash into a comforting crowd-pleaser.

Ingredients

Scale
  • 4 cups combined yellow squash and zucchini, thinly sliced or chopped
  • 1 ½ cups sharp cheddar cheese, shredded
  • 1 cup mozzarella cheese, shredded
  • 1 ½ cups Ritz crackers, crushed
  • 4 tablespoons butter, melted
  • ½ cup onion, finely diced
  • 1 teaspoon garlic powder
  • Salt and black pepper, to taste
  • ½ cup mayonnaise
  • 1 large egg, beaten
  • 1 tablespoon fresh thyme or parsley, chopped (optional)

Instructions

  1. Preheat your oven to 350°F (175°C).
  2. Wash and thinly slice about 2 cups each of yellow squash and zucchini. Place them in a large mixing bowl.
  3. Stir in ½ cup finely diced onion.
  4. Sprinkle 1 teaspoon garlic powder, salt, and pepper to taste over the squash and onions. Toss gently to combine.
  5. Add ½ cup mayonnaise and 1 beaten large egg to the bowl. Stir everything together until the veggies are coated evenly.
  6. Fold in 1 ½ cups shredded sharp cheddar and 1 cup mozzarella cheese. Gently mix to distribute the cheese without breaking up the squash too much.
  7. Spread the mixture evenly in a greased 9×13-inch casserole dish, smoothing the top lightly.
  8. In a small bowl, combine 1 ½ cups crushed Ritz crackers with 4 tablespoons melted butter and a pinch of salt. Mix until the crackers are evenly coated.
  9. Evenly distribute the buttery cracker mixture over the squash filling, pressing lightly so it sticks.
  10. Bake for 35-40 minutes, until the topping is golden brown and the filling is bubbly.
  11. Let the casserole cool for 5-10 minutes before serving.

Notes

If the topping browns too quickly, tent the casserole loosely with foil halfway through baking. For less watery casserole, slice squash thicker and drain excess moisture with paper towels. Freshly grate cheese for better melt and texture. You can prepare the casserole ahead of time up to adding the topping and refrigerate overnight.

Nutrition

Keywords: squash casserole, cheesy casserole, Ritz cracker topping, comfort food, easy casserole, zucchini recipe, cheesy squash bake