Zucchini Gratin

User Reviews

5

26 reviews
Excellent
  • Prep Time

    10 mins

  • Cook Time

    30 mins

  • Total Time

    40 mins

  • Servings

    6

  • Calories

    366 kcal

  • Course

    Side Dish

  • Cuisine

    American

Zucchini Gratin

Zucchini Gratin layers tender sauteed zucchini and onions with a creamy thyme-infused white sauce and shredded Monterey Jack cheese. A topping of Italian-style breadcrumbs adds a golden, crisp crust after baking, giving the dish a harmonious blend of creamy, soft vegetables with crunchy contrast. The gratin is seasoned lightly to highlight the flavors of fresh zucchini.

Description

The preparation starts by gently cooking zucchini slices and diced onions in butter until just tender to avoid a mushy texture. A simple roux made from butter and flour creates the base for a creamy sauce, enriched with milk, heavy cream, and dried thyme. This velvety sauce is layered alternately with the cooked vegetables and shredded Monterey Jack cheese in a baking dish.

The assembled gratin finishes with a sprinkle of Italian-style breadcrumbs to create a crisp topping during the 350°F baking. The result is tender zucchini enveloped in a creamy, cheesy sauce with a contrasting crunchy surface. This dish serves as a comforting side or light main course.

Careful cooking of zucchini helps retain texture, and using freshly shredded cheese improves melting quality compared to pre-shredded options. If using frozen zucchini, thawing and draining is necessary to avoid excess moisture diluting the gratin.

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Ingredients

Servings
  • 4 tablespoons butter divided use
  • 2 tablespoons flour
  • 1 1/2 pounds zucchini cut into 1/2 inch slices
  • 1/2 cup onion diced
  • salt to taste
  • black pepper to taste
  • 1/4 teaspoon thyme dried
  • 1/2 cup heavy cream
  • 3/4 cup milk
  • 2 cups Monterey jack cheese shredded
  • 1/2 cup breadcrumbs Italian style
  • 1 tablespoon parsley chopped
  • cooking spray

Instructions

  1. Melt 2 tablespoons of butter in a large pan over medium heat. Preheat the oven to 350 degrees F.
  2. Add the zucchini and onion to the pan and cook for 5-6 minutes or until vegetables are tender. Season with salt and pepper to taste.
  3. Remove the zucchini mixture from the pan and place in a bowl. Cover to keep warm.
  4. Wipe out the pan with a paper towel.
  5. Melt the remaining 2 tablespoons of butter in the pan. Add the flour and whisk to combine.
  6. Cook the flour mixture for 1 minute, stirring constantly.
  7. Whisk in the milk and cook for 2-3 minutes. Add the cream, thyme and salt and pepper to taste.
  8. Cook the sauce for an additional 2 minutes or until just thickened.
  9. Coat a 6 cup baking dish with cooking spray.
  10. Place 1/4 of the sauce in the bottom of the pan.  
  11. Add 1/3 of the zucchini mixture.
  12. Top the zucchini mixture with 1/4 of the sauce and 1/3 of the cheese.
  13. Continue layering the zucchini, sauce and cheese. 
  14. Sprinkle the breadcrumbs over the top of the final layer.
  15. Bake for 20 minutes or until cheese has melted and breadcrumbs are golden brown.
  16. Sprinkle with parsley and serve.

Notes

  • Saute zucchini until just tender to maintain texture and avoid softness.
  • Use freshly shredded cheese for better melting without anti-caking agents.
  • If using frozen zucchini, thaw completely and remove excess water before cooking.

Nutrition Information

Show Details
Calories 366kcal (18%) Carbohydrates 15g (5%) Protein 13g (26%) Fat 21g (32%) Saturated Fat 17g (85%) Cholesterol 83mg (28%) Sodium 432mg (18%) Potassium 424mg (9%) Fiber 1g (4%) Sugar 5g (10%) Vitamin A 1110IU (22%) Vitamin C 21.5mg (24%) Calcium 370mg (37%) Iron 1.4mg (8%)

Nutrition Facts

Serving: 6Serving

Amount Per Serving

Calories 366 kcal

% Daily Value*

Calories 366kcal 18%
Carbohydrates 15g 5%
Protein 13g 26%
Fat 21g 32%
Saturated Fat 17g 85%
Cholesterol 83mg 28%
Sodium 432mg 18%
Potassium 424mg 9%
Fiber 1g 4%
Sugar 5g 10%
Vitamin A 1110IU 22%
Vitamin C 21.5mg 24%
Calcium 370mg 37%
Iron 1.4mg 8%

* Percent Daily Values are based on a 2,000 calorie diet.

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Overall Rating

5

26 reviews
Excellent

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