Zucchini & Summer Squash Gratin

MayaMaya

ingredients

  • For the onions:
  • 2 Tbs. olive oil
  • 2 medium onions, thinly sliced
  • To assemble gratin:
  • 1 1/4 lbs. small ripe tomatoes, cut into 1/4" slices
  • 3/4 lb. (2 small) zucchini, cut into 1/4" slices
  • 3/4 lb. (2 small) yellow summer squash, cut into 1/4" slices
  • 3 Tbs. olive oil
  • 1/4 cup fresh thyme leaves
  • salt
  • 1 1/4 cups grated Parmigiano Reggiano
  • freshly ground black pepper

directions

  • 1

    1. Preheat oven to 375°F.

  • 2

    2. Cook Onions:

  • 3

    Heat olive oil over medium heat. Add onions and sauté until limp & golden brown, about 20 min.. Spread onions on the bottom of a 2 qt. shallow gratin dish. Let cool.

  • 4

    3. Assemble & Bake Gratin:

  • 5

    Put tomato slices on a shallow plate to drain for a few minutes. Toss zucchini & squash slices with 1 1/2 Tbs. of olive oil, 2 Tbs. of thyme, & 1/2 tsp. of salt. Reserve half of cheese for top of gratin. Sprinkle 1 Tbs. of thyme over onions in gratin.

  • 6

    Lay rows of slightly overlapping slices of tomato, sprinkle with cheese, then zucchini slices, sprinkle with cheese, next squash slices, sprinkle with cheese & repeat.

  • 7

    Season lightly with pepper and 1/2 tsp. salt. Drizzle with remaining 1 1/2 Tbs. olive oil. Combine reserved cheese with remaining 1 Tbs. thyme and sprinkle over gratin. Bake until well browned & juices have bubbled a while & reduced, about 65-70 min.. Let cool for 15 min..

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