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Baked Summer Squash and Zucchini Gratin

Baked Summer Squash and Zucchini Gratin layers tender zucchini and yellow squash with a creamy, buttery crumb and melted cheese for a rich, cozy bite. The cracker-cornmeal topping turns crisp and golden in the oven, contrasting the soft vegetables beneath. Serve this as a comforting side for weeknight dinners or alongside roasted meats at a casual summer gathering.

  • Prep20 mins
  • Cook45 mins
  • Serves6
  • DifficultyEasy
Baked Summer Squash and Zucchini Gratin
  1. 1

    Preheat the oven to 425 degrees F (220 degrees C).

  2. 2

    Put the buttery crackers and cornmeal into a resealable plastic bag; seal it and crush them into fine crumbs.

  3. 3

    Heat olive oil in a large skillet over medium heat. Add the shallot; cook, stirring, until translucent, about 5 minutes. Add the yellow squash and zucchini; season with garlic powder, salt, and black pepper. Cook until softened, about 10 minutes.

  4. 4

    Add the milk and butter to the skillet. Raise the heat to medium-high; cook until the butter melts, 2 to 3 minutes. Stir in the crumb mixture and the cheese blend. Remove from the heat.

  5. 5

    Spread the squash mixture in an 8-inch square baking pan.

  6. 6

    Bake in the preheated oven until bubbly, about 15 minutes. Increase the oven temperature to 450 degrees F (230 degrees C); continue baking until lightly browned, about 10 minutes more.