Creamy Baked Vegetable Gratin with Gruyère and Parmesan: Your Ultimate Comfort Food Recipe

Preheat Oven: Set your oven to 400°F.

Prepare the Vegetables: Use a mandoline or sharp knife to slice the potatoes, sweet potatoes, zucchini, and turnips into ⅙-inch thick slices. You can leave the skins on or peel them based on preference.

Pre-Bake the Veggies: Arrange the sliced vegetables in a single layer across baking trays lined with parchment paper (you may need multiple trays). Drizzle with olive oil, then sprinkle with paprika, 1 teaspoon salt, 1 teaspoon pepper, 1 teaspoon garlic powder, and 1 teaspoon Italian seasoning. Bake for 15 minutes.

Make the Cheese Cream Sauce: In a large mixing bowl, whisk together the heavy cream, grated Parmesan, half the Gruyère, nutmeg, and the remaining salt, pepper, garlic powder, and Italian seasoning.

Assemble the Gratin: Butter a 9×13-inch baking dish. Spread a few tablespoons of the cream sauce at the bottom. Arrange the pre-baked vegetable slices vertically, stacking them tightly next to each other. Pour the remaining cheese mixture evenly over the vegetables.

Bake Covered: Cover the dish with aluminum foil and bake for 20 minutes.

Finish Uncovered: Remove the foil, sprinkle the remaining Gruyère cheese on top, and return to the oven for an additional 20 minutes, or until the top is golden brown and crispy.

Cool and Serve: Let the gratin rest for 5–10 minutes before slicing and serving.

Details:

A warm and comforting vegetable gratin layered with potatoes, sweet potatoes, zucchini, and turnips — all coated in a rich cream sauce and topped with melty Gruyère and Parmesan. This veggie-forward dish is perfect as a side for holiday meals or hearty weeknight dinners.