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Classic Southern Yellow Squash Casserole with Buttery Cracker Topping

squash casserole - Tasty

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You will make this creamy, cheesy yellow squash casserole, a classic Southern side dish, often requested for family dinners and potlucks. It features tender squash and a buttery, crispy Ritz cracker topping.

Ingredients

Scale
  • 6 medium yellow squash (about 3 pounds)
  • 1 medium onion, finely chopped
  • 1 cup shredded sharp cheddar cheese
  • 1/2 cup sour cream
  • 1/2 cup mayonnaise
  • 2 large eggs, lightly beaten
  • 1/4 cup all-purpose flour
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/2 cup (1 sleeve) crushed Ritz crackers
  • 4 tablespoons unsalted butter, melted

Instructions

  1. Preheat your oven to 375 degrees Fahrenheit. Lightly grease a 9×13 inch baking dish.
  2. Wash the yellow squash and slice it thinly. You can grate it or slice it into thin rounds.
  3. Place the sliced squash and chopped onion in a large bowl. Cover with water and add 1 teaspoon of salt. Let it sit for 15 minutes, then drain well and squeeze out as much excess liquid as possible using a clean kitchen towel or paper towels. This step is important for a creamy, not watery, casserole.
  4. In a separate large bowl, whisk together the sour cream, mayonnaise, eggs, flour, 1 teaspoon salt, and 1/2 teaspoon pepper until smooth.
  5. Stir the drained squash and onion mixture into the wet ingredients until everything is evenly coated.
  6. Fold in the shredded cheddar cheese.
  7. Pour the squash mixture into the prepared baking dish, spreading it into an even layer.
  8. In a small bowl, combine the crushed Ritz crackers and the melted butter. Mix until the crumbs are coated.
  9. Sprinkle the buttery cracker topping evenly over the squash mixture.
  10. Bake for 30 to 35 minutes, or until the casserole is set in the center and the topping is golden brown and crisp.
  11. Let the casserole rest for 5 to 10 minutes before you serve it.

Notes

  • You can prepare the squash mixture (up to step 5) a day ahead. Store it covered in the refrigerator. Add the topping just before baking.
  • For a slightly different flavor, substitute half of the cheddar cheese with Monterey Jack or Swiss cheese.
  • If you do not have Ritz crackers, you can use crushed saltine crackers or panko breadcrumbs mixed with melted butter.

Nutrition