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Creamy Yellow Squash and Parmesan Gratin Recipe with Fresh Thyme

creamy yellow squash and parmesan gratin - featured image

A comforting and easy-to-make gratin featuring thinly sliced yellow squash layered with a creamy Parmesan sauce infused with fresh thyme and garlic, topped with a golden crust.

Ingredients

Scale
  • 4 medium yellow squash, sliced into 1/8-inch thick rounds
  • 1 cup freshly grated Parmesan cheese
  • 1 cup heavy cream
  • 2 teaspoons fresh thyme leaves
  • 2 cloves garlic, minced
  • 2 tablespoons unsalted butter, softened
  • Salt and freshly ground black pepper, to taste
  • 1/4 cup breadcrumbs (optional, preferably panko)

Instructions

  1. Preheat your oven to 375°F (190°C). Butter your baking dish generously to prevent sticking and add flavor.
  2. Slice the yellow squash thinly, about 1/8-inch thick. Use a mandoline or sharp knife for uniform slices.
  3. In a medium bowl, mix 1 cup heavy cream, minced garlic, 2 teaspoons fresh thyme leaves, salt, and pepper to taste until well blended.
  4. Add the sliced squash to the cream mixture and gently toss to coat every piece evenly.
  5. Arrange half the squash slices in an even layer in the baking dish, slightly overlapping. Sprinkle half the grated Parmesan over the first layer.
  6. Spread the remaining squash slices over the cheese layer, then pour any leftover cream mixture evenly on top.
  7. Top with the remaining Parmesan and optional breadcrumbs for extra crunch.
  8. Bake uncovered for 30 to 35 minutes until the gratin bubbles around the edges and the top is golden brown.
  9. Let the gratin rest for 5 minutes before serving to thicken the sauce and settle flavors.

Notes

If the top browns too quickly, tent with foil halfway through baking. For watery squash, salt slices and drain for 10 minutes before mixing. A quick broil for 2 minutes can crisp the top if needed. Breadcrumbs can be omitted or replaced with gluten-free panko for gluten-free version. Fresh thyme is essential for best flavor. Let the gratin rest before serving for better texture.

Nutrition

Keywords: yellow squash gratin, creamy squash recipe, Parmesan gratin, fresh thyme, comfort food, easy side dish, summer squash recipe