Squash Casserole

A comforting and delicious squash casserole made with fresh squash, a creamy base, and topped with a crispy breadcrumb layer. Perfect as a side dish or a light meal.

NewPublished Apr 4, 2026
Prep Time20 min
Cook Time35 min
Total55 min
Servings4
DifficultyEasy

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Baked squash casserole with a golden breadcrumb topping.

Ingredients

Servings4

Yields 4 servings

  • (2) medium yellow squash, sliced
  • (2) medium zucchini, sliced
  • (1) medium onion, chopped
  • (2 cloves) garlic, minced
  • (1 cup) shredded cheddar cheese
  • (1 cup) sour cream
  • (1/2 cups) mayonnaise
  • (1 teaspoon) salt
  • (1/2 teaspoons) black pepper
  • (1/2 teaspoons) paprika
  • (1 cup) breadcrumbs
  • (2 tablespoons) olive oil
  • (1/4 cups) grated Parmesan cheese

Instructions

  1. 1

    Preheat the oven to 350°F (175 °C).

  2. 2

    In a large skillet, heat 2 tablespoons of olive oil over medium heat. Add 1 medium onion, chopped, and sauté for about 3 minutes until softened.

  3. 3

    Add 2 cloves of minced garlic and sauté for an additional minute until fragrant.

  4. 4

    Stir in 2 medium yellow squash, sliced, and 2 medium zucchini, sliced. Cook for about 5-7 minutes until the squash is tender. Remove from heat and set aside. Add 1 teaspoon salt, 2/4 teaspoon black pepper, and 2/4 teaspoon paprika.

  5. 5

    In a large bowl, combine 1 cup of sour cream, 1/2 cup of mayonnaise, 1 teaspoon of salt, 1/2 teaspoon of black pepper, and 1/2 teaspoon of paprika. Mix well.

  6. 6

    Add the sautéed squash mixture to the bowl and stir in 1 cup of shredded cheddar cheese until well combined.

  7. 7

    Transfer the mixture into a greased 9x13 inch baking dish, spreading it evenly.

  8. 8

    In a separate bowl, mix 1 cup of breadcrumbs with 1/4 cup of grated Parmesan cheese. Sprinkle this mixture evenly over the squash mixture in the baking dish.

  9. 9

    Bake in the preheated oven for 30-35 minutes, or until the top is golden brown and the casserole is bubbly.

  10. 10

    Remove from the oven and let it cool for a few minutes before serving.

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