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Cheesy Root Vegetable Gratin

Cheesy Root Vegetable Gratin: Your New Favorite Holiday Side

This Cheesy Root Vegetable Gratin is a vibrant, easy, and crowd-pleasing holiday side that showcases sweet potatoes, parsnips, and beets.
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Prep Time 15 minutes
Cook Time 50 minutes
Total Time 1 hour 5 minutes
Servings: 6 servings
Course: Dinner
Cuisine: Vegetarian
Calories: 350
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Gratin
  • 3 tablespoons Unsalted Butter for greasing the baking dish
  • 2 long Sweet Potatoes provides sweetness and structure
  • 2 large Parsnips adds nutty flavor and texture
  • 3 small Beets contributes earthiness and vibrant color
  • 1 cup Heavy Cream creates a creamy binding sauce
  • 8 ounces Grated Parmesan divided into layers
  • 2 tablespoons Fresh Minced Thyme enhances flavor
  • 1 clove Garlic minced for flavor
  • 1 cup Shredded Gruyère for topping
  • Salt to taste
  • Pepper to taste

Equipment

  • Oven
  • 3-quart baking dish
  • mandoline

Method
 

Step-by-Step Instructions
  1. Preheat your oven to 400°F (200°C) and grease the baking dish with softened unsalted butter.
    Cheesy Root Vegetable Gratin
  2. Slice the sweet potatoes, parsnips, and beets into very thin rounds using a mandoline.
    Cheesy Root Vegetable Gratin
  3. In a bowl, combine sweet potato and parsnip slices with heavy cream, half of the grated Parmesan, thyme, salt, and pepper. Toss to coat.
    Cheesy Root Vegetable Gratin
  4. Toss the beet slices with 2 tablespoons of cream, salt, and pepper. Set aside.
    Cheesy Root Vegetable Gratin
  5. Add 1/4 cup of cream to the greased dish, sprinkle minced garlic and some Parmesan. Arrange the vegetable slices in neat rows, alternating types.
    Cheesy Root Vegetable Gratin
  6. Season the top with salt and pepper, then sprinkle remaining Parmesan. Cover with foil and bake for 30 minutes.
    Cheesy Root Vegetable Gratin
  7. Remove the foil, add shredded Gruyère, and bake uncovered for an additional 18-20 minutes until golden and bubbly.
    Cheesy Root Vegetable Gratin
  8. Garnish with fresh thyme before serving.
    Cheesy Root Vegetable Gratin

Nutrition

Serving: 1sliceCalories: 350kcalCarbohydrates: 30gProtein: 8gFat: 24gSaturated Fat: 14gPolyunsaturated Fat: 1gMonounsaturated Fat: 7gCholesterol: 65mgSodium: 580mgPotassium: 800mgFiber: 5gSugar: 5gVitamin A: 10000IUVitamin C: 15mgCalcium: 300mgIron: 2mg

Notes

To store, keep leftovers in an airtight container for up to 3 days in the fridge or freeze for up to 2 months. Reheat gently to preserve the creamy texture.

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