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Golden baked carrot mash in a silicone mold from the air fryer and in a baking dish

Carrot and potato mash gratin

Main dishes

Baked carrot mash with potatoes and softened onions, bound with eggs and cream and topped with Gruyère: mellow and comforting.

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By · · updated on · ★★★★★ (1 rating)

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A golden baked carrot mash with potatoes: Axelle made two, one in the oven in a baking dish and the other in the air fryer in a silicone mold.

The carrots and potatoes cook together in water, then are mashed and mixed with softened onions, eggs, cream, Gruyère and nutmeg. A turn in a hot oven browns the top.

A colorful side dish that kids love too.

Ingredients and directions

  • Prep time30 min
  • Cook time1 hr
  • Total1 hr 30 min
  • DifficultyEasy
  • CostBudget
  • Cooking methodBaked
  • Estimated cost$6.69 $1.34 / serving Estimated price; varies by store. Converted from euros at the ECB rate of October 14, 2026.

Ingredients

5 servings
  • $1.54
  • $1.06
  • $0.41
  • $0.80
  • $0.40
  • $1.62
  • $0.44
  • $0.38
  • $0.04

Prices from US supermarkets for 5 of 9 ingredients; Belgian prices for the rest.

Directions

  1. Peel the carrots and potatoes and cook them for at least 40 minutes in boiling salted water.
  2. Drain and mash them with a fork or potato masher. ≈ 4 min
  3. Chop the onions and soften them in a little butter.
  4. Preheat the oven to 210 °C.
  5. Beat the eggs with the cream, Gruyère and nutmeg, then add the onions, salt, pepper and the mash. ≈ 4 min
  6. Spread in a buttered dish, sprinkle with Gruyère and dot with butter, then bake for 10 to 15 minutes.

The bill

Carrot and potato mash gratin

  • 500 g carrots$1.54
  • 500 g potatoes$1.06
  • 2 onions$0.41
  • 2 eggs$0.80
  • 10 cl crème fraîche$0.40
  • 50 g grated Gruyère$1.62
  • Butter$0.44
  • Nutmeg$0.38
  • Salt and pepper$0.04

Total$6.69

that's $1.34 per person

Estimated price; varies by store.

Equipment

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Before you start

Ingredients

  • 500 g carrots
  • 500 g potatoes
  • 2 onions
  • 2 eggs
  • 10 cl crème fraîche
  • 50 g grated Gruyère
  • Butter
  • Nutmeg
  • Salt and pepper

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