Zucchini and Onion Gratin
Created by breezermom on June 2, 2024
- Servings: 6
- Prep Time: 20m
- Cook Time: 1h
- Recipe #42912
Ingredients
- 2 tablespoons olive oil, divided
- 1 large onion, quartered lengthwise and thinly sliced
- 1 tablespoon tomato paste
- 2 teaspoons grated lemon rind
- 1 teaspoon fresh thyme leaves
- 3/8 teaspoon kosher salt, divided
- 1/4 teaspoon freshly ground black pepper
- 1 1/2 pounds zucchini, diagonally sliced into 1/4-inch-thick pieces
- 1 ounce Parmesan cheese, grated (about 1/4 cup)
How to Make
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Step 1: Heat a large skillet over medium heat. Add 1 tablespoon oil to pan; swirl to coat.
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Step 2: Add onion; cook 6 minutes, stirring occasionally. Stir in tomato paste; cook 2 minutes.
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Step 3: Stir in rind, thyme, 1/8 teaspoon salt, and pepper; cook 2 minutes, stirring occasionally.
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Step 4: Preheat broiler to high.
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Step 5: Arrange zucchini on a jelly-roll pan. Drizzle with remaining 1 tablespoon oil; toss. Broil 7 minutes or until lightly charred. Sprinkle with remaining 1/4 teaspoon salt.
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Step 6: Preheat oven to 375°.
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Step 7: Spread onion mixture in a 2-quart gratin dish. Arrange zucchini mixture over onion mixture. Sprinkle with cheese. Cover and bake at 375° for 25 minutes. Remove from oven.
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Step 8: Preheat broiler to high.
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Step 9: Uncover zucchini mixture; broil 1 1/2 minutes or until lightly browned.
Nutritional Facts
- Serving Size: 1 (57.7 g)
- Calories 70.3
- Total Fat - 5.7 g
- Saturated Fat - 1.3 g
- Cholesterol - 3.3 mg
- Sodium - 195 mg
- Total Carbohydrate - 3.3 g
- Dietary Fiber - 0.7 g
- Sugars - 1.7 g
- Protein - 2.1 g
- Calcium - 60.8 mg
- Iron - 0.2 mg
- Vitamin C - 6 mg
- Thiamin - 0 mg