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Parmesan Zucchini Casserole

You will find tons of creaminess in this Parmesan Zucchini Casserole. Enjoy this super easy fresh and flavorful dish as a side or even a main meal. Grab some fresh zucchini and have this delicious recipe baked in no time.
Course Side Dish
Cuisine American
Prep Time 15 minutes
Cook Time 30 minutes


  • 4-5 small-medium Zucchini and/or Yellow Squash sliced about 1/8" thick
  • 5 ounces grated Parmesan Cheese divided
  • 1/2 cup Heavy Cream
  • 3 tbsp Butter
  • 1 small Onion diced
  • 1 tsp minced Garlic
  • 1/2 tsp Salt
  • 1/4 tsp Pepper


  • Preheat oven to 450.
  • Butter a casserole dish (I used 12x8").
  • Line dish with the zucchini slices overlapping each other in rows until filled.
  • Melt remaining butter over medium heat in a skillet.
  • Add onion, garlic, salt and pepper to the skillet and cook until onion is translucent (about 3 minutes).
  • Add the heavy cream.
  • Stirring until it just boiling.
  • Add 3 ounces of Parmesan cheese to the skillet, stirring until the cheese melts.
  • Pour the sauce evenly over zucchini.
  • Tent the dish with foil and place in the oven 20 minutes.
  • Remove foil, top with the remaining cheese and bake for 5 more minutes.
  • Remove from oven and serve.