Zucchini And Onion Gratin

1. 1

   Heat a large skillet over medium heat. Add 1 tablespoon oil to pan; swirl to coat. Add onion; cook 6 minutes, stirring occasionally. Stir in tomato paste; cook 2 minutes. Stir in rind, thyme, 1/8 teaspoon salt, and pepper; cook 2 minutes, stirring occasionally.

2. 2

   Preheat broiler to high.

3. 3

   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.

4. 4

   Preheat oven to 375u00b0.

5. 5

   Spread onion mixture in a 2-quart gratin dish. Arrange zucchini mixture over onion mixture. Sprinkle with cheese. Cover and bake at 375u00b0 for 25 minutes. Remove from oven.

6. 6

   Preheat broiler to high.

7. 7

   Uncover zucchini mixture; broil 1 1/2 minutes or until lightly browned.

* Per serving · 4 servings · Values may vary.

No additional tips available.