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Cheesy Root Vegetable Gratin

Cheesy Root Vegetable Gratin for a Cozy Holiday Feast

An amazing Cheesy Root Vegetable Gratin that is a perfect holiday side dish packed with earthy flavors and creamy texture.
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Prep Time 30 minutes
Cook Time 50 minutes
Total Time 1 hour 20 minutes
Servings: 8 servings
Course: Dinner
Cuisine: American
Calories: 320
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Gratin
  • 1 tablespoon Unsalted Butter Greasing the baking dish
  • 2 pieces Sweet Potatoes About 2 inches thick
  • 4 pieces Parsnips Peeled and trimmed
  • 5 pieces Beets Peeled
  • 1 cup Heavy Cream Can substitute with whole milk
  • 4 ounces Grated Parmesan Divided
  • 1 tablespoon Fresh Minced Thyme Divided
  • 1 clove Minced Garlic For flavor
  • 1 ounce Shredded Gruyère For topping
  • to taste Salt Essential seasoning
  • to taste Pepper Essential seasoning
Optional Variations
  • Other Root Vegetables Carrots or turnips can be used
  • Dairy-Free Option Use full-fat coconut milk instead of heavy cream
  • Different Cheeses Try cheddar or mozzarella

Equipment

  • 3-quart baking dish
  • Mandoline

Method
 

Step‑by‑Step Instructions
  1. Preheat your oven to 400°F (200°C) and grease a 3-quart baking dish with unsalted butter.
  2. Slice the sweet potatoes, parsnips, and beets into thin rounds, about 1/8 inch thick using a mandoline.
  3. In the bowls with sliced vegetables, add 4 tablespoons of cream and seasonings to sweet potatoes and parsnips, and 2 tablespoons of cream to beets. Toss gently to coat.
  4. Pour ¼ cup of heavy cream into the baking dish, sprinkle with ½ ounce of Parmesan and minced garlic, and layer the vegetables.
  5. Season the top layer with salt and pepper, cover with foil, and bake for 30 minutes until fork-tender.
  6. Remove the foil, sprinkle shredded Gruyère on top, and bake uncovered for an additional 18-20 minutes until cheese is golden and bubbly.
  7. Let it sit for a moment, garnish with fresh thyme leaves, and serve warm.

Nutrition

Serving: 1servingCalories: 320kcalCarbohydrates: 25gProtein: 6gFat: 22gSaturated Fat: 12gPolyunsaturated Fat: 1gMonounsaturated Fat: 7gCholesterol: 40mgSodium: 300mgPotassium: 600mgFiber: 4gSugar: 5gVitamin A: 1200IUVitamin C: 10mgCalcium: 200mgIron: 1mg

Notes

Can be prepared a day in advance and reheated for best flavor and texture.

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