Here’s what you do:
You’re going to heat your oven broiler on high. You don’t even need an oven temperature, just the broiler for this. You’re going to slice your zucchini thin since it needs to cook quickly, and then you’re going to arrange it on a rimmed baking sheet or a shallow baking pan that’s been greased with butter. Season it up with some salt and pepper and pop it under that broiler for literally four minutes.
INGREDIENTS
Unsalted butter, softened, as needed
1 lb zucchini, thinly sliced
2/3 cup heavy cream
1 teaspoon dried thyme
1/2 teaspoon garlic powder
1/2 cup Parmigiano-Reggiano, freshly grated
1 1/2 tablespoons all-purpose flour
1/2 cup Gruyere cheese, freshly grated
1/3 cup panko breadcrumbs
Kosher salt and freshly ground black pepper, to taste
PREPARATION
Position a rack in your oven 6 inches from the broiler and heat broiler on high.
Grease a shallow 9×13-inch baking dish or rimmed sheet pan with softened butter.
Season zucchini with salt and pepper and arrange on baking pan. Broil just until squash is beginning to soften, about 4 minutes.
While squash bakes, whisk together cream, thyme, garlic powder, parmesan cheese, and flour in a small bowl. Pour mixture evenly over squash, then top with Gruyere cheese and panko breadcrumbs.
Return to oven and broil until golden brown and bubbly, 4-5 minutes. Enjoy!