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Cheesy Root Vegetable Gratin

Cheesy Root Vegetable Gratin: Comfort in Every Bite

This Cheesy Root Vegetable Gratin combines sweet potatoes, beets, and parsnips for a rich and creamy holiday side dish.
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Prep Time 30 minutes
Cook Time 48 minutes
Total Time 1 hour 18 minutes
Servings: 6 servings
Course: Dinner
Cuisine: American
Calories: 300
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Gratin
  • 2 tablespoons Unsalted Butter Grease the baking dish to prevent sticking
  • 2 cups Sweet Potatoes Provides delicious sweetness and a creamy texture
  • 1 cup Parsnips Adds mild sweetness and creamy texture
  • 1 cup Beets Contributes earthy flavor and vibrant color
  • 1 cup Heavy Cream Binds gratin ingredients and adds richness
  • 1 cup Grated Parmesan Enhances salty flavor depth
  • 1 tablespoon Fresh Minced Thyme Infuses lovely herbal notes
  • 1 clove Garlic Gives the dish aromatic undertones
  • 1 cup Shredded Gruyère Melts beautifully for a cheesy topping
  • to taste Salt Essential for seasoning to taste
  • to taste Pepper Essential for seasoning to taste
For Serving
  • 1 tablespoon Fresh Thyme A lovely garnish for color and flavor

Equipment

  • Oven
  • 3-quart Baking Dish
  • Mandoline Slicer

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. Thinly slice the sweet potatoes, parsnips, and beets using a mandoline slicer. Transfer to separate bowls.
  3. Coat the sliced vegetables in heavy cream, grated Parmesan, minced thyme, salt, and pepper. Toss gently.
  4. Pour remaining cream into the bottom of the greased baking dish, sprinkle with Parmesan and minced garlic.
  5. Layer the vegetable slices vertically, alternating between sweet potatoes, parsnips, and beets.
  6. Sprinkle any leftover seasoning, add more grated Parmesan, cover with foil, and bake for 30 minutes.
  7. Remove foil, spread shredded Gruyère on top, and bake uncovered for an additional 18-20 minutes.
  8. Garnish with fresh thyme leaves and serve warm.

Nutrition

Serving: 1servingCalories: 300kcalCarbohydrates: 30gProtein: 7gFat: 20gSaturated Fat: 12gPolyunsaturated Fat: 0.5gMonounsaturated Fat: 7gCholesterol: 50mgSodium: 450mgPotassium: 600mgFiber: 4gSugar: 5gVitamin A: 100IUVitamin C: 15mgCalcium: 20mgIron: 8mg

Notes

This Cheesy Root Vegetable Gratin is best served warm and can be made ahead for convenience.

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