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Cheesy Root Vegetable Gratin (Cheesy Root Vegetable Gratin Recipe)

Cheesy Root Vegetable Gratin with beets and sweet potatoes
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A stunning and cozy side dish made with layers of sweet potatoes, beets, and parsnips baked in garlic cream and topped with melty gruyère cheese.

Ingredients

Scale
  • 1 tablespoon unsalted butter, softened
  • 1–2 long sweet potatoes (about 2 inches thick), peeled
  • 3–4 large parsnips, ends trimmed and peeled
  • 3–5 small beets, peeled
  • 14 tablespoons heavy cream, divided
  • 4 ounces grated Parmesan, divided
  • 1 tablespoon fresh minced thyme, divided, plus more for garnish
  • 1 garlic clove, minced
  • 1 ounce shredded gruyère cheese
  • Salt and pepper to taste

Instructions

1. Preheat oven to 400°F. Grease a 3-quart baking dish with butter.

2. Slice sweet potatoes, parsnips, and beets into very thin rounds using a mandoline if available. Transfer each vegetable to its own bowl.

3. Pour 4 tablespoons of heavy cream over the sweet potatoes and parsnips, and 2 tablespoons over the beets.

4. Top each bowl with ½ ounce Parmesan and 1 teaspoon minced thyme. Season with salt and pepper. Toss to coat evenly.

5. Pour remaining ¼ cup cream into the bottom of the greased baking dish and sprinkle with ½ ounce Parmesan and minced garlic.

6. Arrange vegetables in rows by stacking and standing them on a bias in the baking dish: sweet potatoes, parsnips, then beets. Repeat to form 6 rows.

7. Season the top with salt, pepper, and the remaining Parmesan. Cover tightly with foil.

8. Bake covered for 30 minutes until vegetables start to soften.

9. Uncover and sprinkle with shredded gruyère. Bake uncovered for 18-20 more minutes until vegetables are fork-tender and cheese is melted and lightly browned.

10. Garnish with fresh thyme leaves and serve warm.

Notes

This dish can be prepared a day ahead and refrigerated, tightly wrapped in foil. Add 5–7 minutes to baking time if chilled.

Use gloves when handling beets to avoid staining your hands.

Keep vegetable slices uniformly thin for even cooking—using a mandoline is highly recommended.

To minimize beet bleeding, ensure they are just lightly coated in cream and avoid excessive cream in the bottom of the baking dish.

Great for special occasions like Thanksgiving or as a cozy side for any fall or winter meal.

Nutrition

Find it online: https://paulakitchen.com/cheesy-root-vegetable-gratin/