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–+ servings
A freshly baked potato gratin, perfect for hearty food recipes, sits in a round white ceramic dish topped with golden melted cheese and fresh herbs, beside brown onions and a blue-striped cloth on a gray surface.
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Potato and Onion Bake

Caramelized onion and potato bake with a garlic cream sauce baked until bubbly and golden.
Prep Time1 hour 15 minutes
Cook Time45 minutes
Total Time1 hour
Course: Side Dish
Cuisine: French
Keyword: potato gratin, scalloped potatoes
Servings: 7 people

Equipment

Ingredients

  • 1 kg potatoes 2 pounds
  • 3 onions medium
  • 25 grams butter 2 tablespoons
  • 400 ml heavy cream
  • 2 tablespoons mustard
  • 2 cloves garlic
  • 1/2 tsp nutmeg
  • 100 grams cheddar grated
  • sea salt to taste
  • black pepper to taste
  • fresh thyme

Instructions

  • Preheat oven to 180° C / 355°F.
  • Peel the potatoes.
  • Slice the potatoes using a mandolin.
  • Dice the onion.
  • Heat the butter in a medium-hot pan (you can also use olive oil) and throw in the chopped onions.
  • Fry until golden brown.
  • Place the onion at the bottom of your serving dish. Use the back of a spoon to spread it around.
  • Arrange the sliced potatoes around the dish's perimeter, working your way towards the center.
  • Mix the mustard, grated garlic, heavy cream, nutmeg, sea salt, and pepper.
  • Pour the cream mixture over the potatoes.
  • Top with the grated cheddar.
  • Bake at 180° C / 355°F for 40-45 minutes until the cheese is crispy and golden brown. You can grill for 2-3 minutes if you like - keep an eye out that the cheese doesn't burn.
  • Remove from the oven and allow to set slightly.
  • Sprinkle with fresh thyme and serve.

Video

Nutrition

Calories: 413kcal | Carbohydrates: 32g | Protein: 9g | Fat: 29g | Saturated Fat: 18g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 7g | Trans Fat: 0.1g | Cholesterol: 87mg | Sodium: 190mg | Potassium: 747mg | Fiber: 4g | Sugar: 5g | Vitamin A: 1084IU | Vitamin C: 32mg | Calcium: 172mg | Iron: 1mg