Zucchini and Onion Gratin

10 Reviews
ADD YOUR REVIEW
Photo: Jennifer Causey; Styling: Ginny Branch
Hands-on Time
21 Mins
Total Time
45 Mins
Yield
Serves 6 (serving size: about 1 cup)
By Deborah Madison
June 2014
RECIPE BY Cooking Light

You can serve this side dish hot, but it's also great at room temperature.

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)

Nutritional Information

  • Calories 92
  • Fat 6.3g
  • Satfat 1.6g
  • Monofat 3.7g
  • Polyfat 0.6g
  • Protein 4g
  • Carbohydrate 7g
  • Fiber 2g
  • Cholesterol 4mg
  • Iron 1mg
  • Sodium 224mg
  • Calcium 79mg

How to Make It

Step 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.

Step 2

Preheat broiler to high.

Step 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.

Step 4

Preheat oven to 375°.

Step 5

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.

Step 6

Preheat broiler to high.

Step 7

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

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Ratings & Reviews

Great side dish

3Boys4Me77
July 02, 2015
Even DH who normally complains when I cook zucchini said it was yummy.  Definitely a keeper here.

Yummy!

daneanp
April 28, 2015
Made this exactly as written and turned out wonderful. The Onions had the best flavor. Very easy dish to prepare ahead also.

mp2908's Review

karinemarc74
October 09, 2014
I'm tired of grilled zucchini and this was a great recipe for a change.

karinemarc74's Review

Whygal
October 03, 2014
instead of tomato sauce used a can of tomatoes which delivered more flavour. added some garlic too.

saemerson's Review

acregan
September 02, 2014
Love this recipe. Added 2 sliced tomatoes sliced when broiled the zucchini. And a layer of extra parmesan cheese. The onion base seems dry but the liquid from the veggies loosens the tomato bases to a lovely sauce. Really great

acregan's Review

EICrabb
August 09, 2014
Dee-licious! Next time I'm going to double the onion mixture, layering it on top before adding the cheese. I know the calorie count will increase, but I don't care!!!!!

3Boys4Me77's Review

cb1986
June 16, 2014
This was excellent! It went together quickly and easily and was extremely tasty. I used the leftovers for filling in a quesadilla for lunch the next day. Yummy! I'll definitely hold on to this one for when my garden is exploding with zucchini in a few weeks.

blanca201's Review

mp2908
May 23, 2014
N/A

Whygal's Review

saemerson
May 23, 2014
Loved this side dish. I am always looking for new ways with zucchini and this was perfect. The only change I made was to grill the zucchini--everything else I did as written.

cb1986's Review

blanca201
May 21, 2014
N/A