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Creamy Summer Squash and Zucchini Casserole with Parmesan and Cracker Topping

Close-up of a scoop taken from the Cheesy Summer Squash Casserole, showing creamy interior and golden, crunchy topping.
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A simple, creamy baked casserole featuring fresh summer squash and zucchini, topped with a buttery, crisp cracker crust.

Ingredients

Scale
  • 3 cups sliced yellow squash
  • 3 cups sliced zucchini
  • 1 medium onion, chopped
  • 4 tablespoons butter, melted, divided
  • 1 can (10.5 ounces) condensed cream of chicken soup
  • 1/2 cup sour cream
  • 1 cup shredded sharp cheddar cheese
  • 1/2 cup grated Parmesan cheese, divided
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1 cup crushed Ritz crackers

Instructions

  1. Preheat your oven to 375 degrees Fahrenheit. Lightly grease a 9×13 inch baking dish.
  2. Place the sliced squash and onion in a large pot. Add just enough water to cover the vegetables. Bring to a boil and cook until tender-crisp, about 5 to 7 minutes. Drain the vegetables well.
  3. In a large bowl, combine the drained squash and onion mixture with the cream of chicken soup, sour cream, cheddar cheese, 1/4 cup of the Parmesan cheese, salt, and pepper. Mix until everything is evenly coated.
  4. Spread the mixture evenly into the prepared baking dish.
  5. In a small bowl, combine the crushed Ritz crackers with 2 tablespoons of the melted butter. Sprinkle this mixture over the top of the casserole.
  6. Bake for 25 minutes.
  7. Remove the casserole from the oven. Sprinkle the remaining 1/4 cup of Parmesan cheese over the cracker topping. Drizzle with the remaining 2 tablespoons of melted butter.
  8. Return to the oven and bake for another 5 to 10 minutes, or until the topping is golden brown and the casserole is bubbly.

Notes

  • For a gluten-free version, substitute the Ritz crackers with crushed gluten-free butter crackers or panko breadcrumbs mixed with melted butter.
  • You can substitute Gruyere cheese for the cheddar cheese for a nuttier flavor.
  • This casserole tastes best when allowed to rest for 5 minutes after removing it from the oven before serving.

Nutrition

Find it online: https://spoonsprout.com/cheesy-summer-squash-casserole-recipe/