Classic Yellow Squash Casserole

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This Yellow Squash Casserole is the perfect combination of creamy, cheesy, and comforting. The tender squash and onion mixture is baked into a rich, cheesy base, and the optional breadcrumb topping adds a satisfying crunch. The golden, bubbly casserole is a great way to enjoy the fresh, light flavor of yellow squash while giving it a comforting upgrade.

  1. Ingredients:
  • 4 cups yellow squash, sliced thin (about 4 medium squash)
  • 1 small onion, finely chopped
  • 2 tablespoons unsalted butter
  • 1/2 cup sour cream
  • 1 cup shredded cheddar cheese
  • 1/2 cup grated Parmesan cheese
  • 1/2 teaspoon garlic powder
  • 1/2 teaspoon onion powder
  • Salt and pepper, to taste
  • 1/2 cup breadcrumbs (optional for topping)
  • 1 tablespoon butter (for breadcrumb topping, optional)

Directions:

  1. Preheat Oven: Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking dish with butter or cooking spray.
  2. Cook Squash: In a large skillet, melt 2 tablespoons of butter over medium heat. Add the sliced yellow squash and chopped onion, and sauté for 5-7 minutes, until the squash is tender and any excess moisture has evaporated. Season with a pinch of salt and pepper.
  3. Combine Casserole Ingredients: In a large mixing bowl, combine the cooked squash and onions with sour cream, shredded cheddar cheese, Parmesan cheese, garlic powder, and onion powder. Stir until everything is well combined.
  4. Transfer to Baking Dish: Transfer the squash mixture to the prepared baking dish and spread it out evenly.
  5. Optional Breadcrumb Topping: If desired, melt 1 tablespoon of butter in a small pan. Add the breadcrumbs and stir until lightly toasted, about 2-3 minutes. Sprinkle the breadcrumbs evenly over the top of the casserole for a crunchy topping.
  6. Bake the Casserole: Bake for 25-30 minutes, or until the casserole is bubbly and the top is golden brown. If you used breadcrumbs, they should be crisp and golden.
  7. Serve: Allow the casserole to cool for a few minutes before serving.

Prep Time: 10 minutes | Cooking Time: 30 minutes | Total Time: 40 minutes
Kcal: 190 kcal (per serving) | Servings: 6 servings

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