Zucchini Gratin Casserole

4.3
(23)
19 Reviews
4 Photos

Delicious layers of cheese, onion and zucchini with a buttery bread crumb topping your family will love!

Submitted by Heidi O
Published on November 12, 2019
4
4
Prep Time:
30 mins
Cook Time:
40 mins
Total Time:
1 hr 10 mins
Servings:
6
Yield:
6 servings
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Ingredients

Original recipe (1X) yields 6 servings

  • 6 tablespoons butter

  • 1 onion, chopped

  • 2 pounds zucchini, cut into 1/4-inch slices

  • 2 teaspoons kosher salt

  • 1 teaspoon freshly ground black pepper

  • 1 teaspoon chopped fresh parsley

  • 2 tablespoons all-purpose flour

  • 1 cup hot milk

  • 1 tablespoon chicken bouillon granules

  • 1 cup shredded extra-sharp Cheddar cheese

  • 4 slices bread, crumbled

  • ½ cup melted butter

Directions

  1. Preheat oven to 400 degrees F (200 degrees C). Grease an 8x10-inch baking dish.

  2. Melt 6 tablespoons of butter in a large skillet over medium heat, and cook and stir the onion until soft, about 6 minutes. Mix in the zucchini, and cover the skillet; cook until tender, about 10 minutes. Stir in the kosher salt, black pepper, and parsley, and cook uncovered for 5 more minutes. Stir in flour, and reduce heat to a simmer.

  3. Mix the hot milk and chicken bouillon granules together in a small bowl, stirring until the bouillon has dissolved. Pour the milk into the skillet, and bring to a simmer, stirring constantly until the milk thickens into a sauce, about 5 minutes. Pour the zucchini mixture into the prepared baking dish. Sprinkle with Cheddar cheese. Mix the bread crumbs with 1/2 cup of melted butter, and sprinkle the crumbs over the casserole.

  4. Bake in the preheated oven until the casserole is bubbling and the top has browned, about 20 minutes.

27 home cooks made it!

Nutrition Facts (per serving)

423 Calories
35g Fat
20g Carbs
10g Protein
Nutrition Facts
Servings Per Recipe 6
Calories 423
% Daily Value *
Total Fat 35g 45%
Saturated Fat 22g 109%
Cholesterol 94mg 31%
Sodium 1282mg 56%
Total Carbohydrate 20g 7%
Dietary Fiber 3g 9%
Total Sugars 6g
Protein 10g 20%
Vitamin C 28mg 31%
Calcium 248mg 19%
Iron 2mg 9%
Potassium 539mg 11%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.