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Classic Southern Yellow Squash Casserole with Buttery Cracker Topping

A close-up of a square slice of bright orange and white squash casserole topped with crispy, golden cornflakes.
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Create the ultimate comfort food side dish with this classic Southern Yellow Squash Casserole. It features tender yellow squash baked in a creamy, cheesy base and finished with a perfectly crisp, buttery Ritz cracker topping.

Ingredients

Scale
  • 4 pounds yellow squash, thinly sliced
  • 1 medium onion, finely chopped
  • 1 cup all-purpose flour
  • 1 cup shredded sharp cheddar cheese
  • 1 cup sour cream
  • 1/2 cup mayonnaise
  • 2 large eggs, lightly beaten
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/2 teaspoon dried thyme
  • 1 cup crushed Ritz crackers
  • 1/2 cup (1 stick) unsalted butter, melted

Instructions

  1. Preheat your oven to 375 degrees Fahrenheit. 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 5 to 7 minutes, until the squash is tender. Drain the squash and onion mixture well. Press out as much excess liquid as possible using a colander or paper towels. You must remove the liquid for the casserole to set properly.
  3. In a large bowl, whisk together the flour, cheddar cheese, sour cream, mayonnaise, eggs, salt, pepper, and thyme until the mixture is smooth and combined.
  4. Gently fold the drained squash and onion mixture into the creamy base until everything is evenly coated.
  5. Spread the squash mixture into your prepared baking dish.
  6. In a small bowl, combine the crushed Ritz crackers and the melted butter. Toss until the crackers are evenly moistened.
  7. Sprinkle the buttery cracker mixture evenly over the top of the squash mixture.
  8. Bake for 30 to 35 minutes, or until the casserole is bubbly around the edges and the topping is golden brown and crisp.
  9. Let the casserole rest for 5 to 10 minutes before you serve it.

Notes

  • You can prepare the entire casserole, without the topping, up to 24 hours ahead of time. Cover and refrigerate. Add the cracker topping just before baking, adding 5 to 10 minutes to the total bake time if baking from cold.
  • For a richer flavor, substitute half of the cheddar cheese with Gruyère or Monterey Jack cheese.
  • If you do not have Ritz crackers, you can substitute with crushed butter crackers or panko breadcrumbs mixed with 1/4 cup melted butter.

Nutrition

Find it online: https://cookerycommand.com/squash-casserole-recipe-southern-comfort-food/