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Overhead shot of golden baked Beetroot Gratin with melted Fontina
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5 from 1 vote

Beetroot Gratin with Fontina & Walnuts

Beetroot Gratin with Fontina is a creamy, cheesy, and elegant side dish with earthy thyme, crunchy walnuts, and layers of tender beets.
Prep Time10 minutes
Cook Time45 minutes
Total Time1 hour
Servings: 6 Servings
Calories: 246kcal
Author: Heather

Ingredients

  • butter for greasing
  • 6 medium beets peeled and thinly sliced with a mandoline or sharp knife
  • 2-3 tbsp olive oil
  • 6 oz fontina cheese shredded
  • 2 tsp fresh thyme minced
  • kosher salt to taste
  • black pepper to taste
  • 3 tbsp heavy cream
  • 3 tbsp walnuts coarsely chopped

Instructions

  • Preheat the oven to 375 degrees F. Butter an 8-inch baking dish.
  • In a large bowl, combine the beets and olive oil and toss gently to coat. In a small bowl, stir together the cheese and thyme. Arrange about one-fourth of the beets in the bottom of the prepared dish, overlapping them very slightly. Sprinkle about one-fourth of the cheese and thyme mixture over the beets and season lightly with salt and pepper. Repeat to make 3 more layers, sprinkling the last layer of the herbed cheese with a little more salt and pepper. Drizzle the cream over the surface and sprinkle with walnuts on top.
  • Bake until the beets are tender and the walnuts are nicely browned, about 45 minutes. Remove the gratin from the oven and let rest for 5 minutes before serving.

Notes

Tips for Storing
  • Store leftovers in an airtight container in the refrigerator for up to 3 days.
  • Reheat in a 350°F oven until warmed through to maintain crispness.
  • Avoid microwaving, as it can make the beets rubbery and the cheese greasy.
  • Gratin can be assembled a day ahead and baked just before serving.
FAQ’s
Can I make this gratin ahead of time?
Yes, assemble the dish up to one day in advance, cover, and refrigerate. Bake just before serving.
Do I need to pre-cook the beets?
No, thinly slicing the beets ensures they cook fully in the oven.
Can I make this dairy-free?
Yes, use a dairy-free cream and cheese substitute. While flavor changes slightly, it still works well.
What’s the best way to slice beets thinly?
A mandoline slicer gives the most consistent results, but a sharp knife also works with careful slicing.
Can I freeze Beetroot Gratin?
Freezing is not recommended, as cream and cheese can separate. Stick to refrigerating leftovers.

Nutrition

Calories: 246kcal | Carbohydrates: 9g | Protein: 10g | Fat: 20g | Saturated Fat: 8g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 7g | Cholesterol: 41mg | Sodium: 293mg | Potassium: 318mg | Fiber: 3g | Sugar: 6g | Vitamin A: 429IU | Vitamin C: 5mg | Calcium: 182mg | Iron: 1mg
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