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summer squash casserole
4.80 from 15 votes

Summer Squash Casserole

Cheesy and Creamy Squash and Zucchini Casserole. The perfect side dish for any meal and any season.
Prep Time 10 minutes
Cook Time 15 minutes
Course Side Dish
Cuisine American
Servings 4
Calories 324 kcal


  • 2 cups diced yellow squash
  • 2 cups diced zucchini
  • 2 tablespoon unsalted butter
  • ½ cup chopped yellow onion
  • 2 tablespoon chopped shallots
  • 1 tablespoon minced garlic
  • ½ teaspoon Italian seasoning
  • ½ teaspoon salt
  • ½ teaspoon black pepper
  • ½ cup heavy cream
  • ½ cup shredded cheddar cheese, (lightly packed)
  • ½ cup parmesan cheese , (divided)
  • ½ cup panko bread crumb, (use more according to your liking)


  • Preheat the oven to 450°F
  • In a large skillet, melt butter over medium heat. Add onion and shallots, cook for about 10 seconds.
  • Add chopped squash, Italian seasoning, salt, and pepper, cook and stir occasionally for about 3 minutes or until the yellow squash and zucchini are crisp-tender.
  • Add garlic, cook for about 30 seconds.
  • Add heavy cream, cook, until reduced for about 3 minutes. Remove from the heat.
  • Stir in cheddar cheese, ¼ cup Parmesan cheese, and ¼ cup bread crumbs.
  • Transfer the mixture into a 2-quart baking dish and sprinkle with ¼ cup bread crumbs and ¼ cup Parmesan cheese. Bake until golden brown for about 8 minutes.



Cheddar cheese is an optional ingredient. You may skip it for a lighter sauce. 


Calories: 324kcalCarbohydrates: 14gProtein: 12gFat: 25gSaturated Fat: 16gCholesterol: 79mgSodium: 654mgPotassium: 418mgFiber: 2gSugar: 5gVitamin A: 1091IUVitamin C: 23mgCalcium: 313mgIron: 1mg
Keyword side dish, cheesy, squash, zucchini, parmesan, cheddar cheese, heavy cream
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