Summer Squash Gratin

INGREDIENTS

• 2 tablespoons butter
• 1/2 white onion, thinly sliced
• 1 medium zucchini, sliced 1/4-inch thick
• 1 medium yellow squash, sliced 1/4-inch thick
• 2 cloves garlic, minced
• 1 tablespoon fresh thyme leaves
• 1/2 cup heavy cream
• 1/4 cup Parmesan, grated
• 1 cup Gruyere or Swiss cheese, grated
• Kosher salt and freshly ground black pepper, to taste

PREPARATION

1. Preheat oven to 450°F.
2. In a 6 to 8-inch oven-safe skillet, heat butter over medium heat. Add onion and cook until soft, about 4 minutes. Add garlic and cook 1 minute more.
3. Stir in cream, thyme, and salt and pepper and let cook until starting to thicken.
4. Stir in parmesan and squash and let bubble for 2-3 minutes. Spread squash out evenly, top with Gruyere cheese and bake until bubbly and golden brown, about 20 minutes. Let rest 5 minutes before serving. Enjoy!