Zucchini and Onion Gratin Recipe

Zucchini and Onion Gratin Recipe

www.recipezazz.com

This dish is good served hot, but it is surprisingly just as good at room temperature. Good for a potluck.

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View full recipe on www.recipezazz.com

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Cooking tools:

  • Jelly-roll pan
  • Baking dish
  • Skillet
  • Oven
  • Measuring spoon
  • Spoon
  • Chef's knife
  • Cutting board

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)

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