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Caramelized Onion Potatoes

Cheesy Caramelized Onion Potatoes that Steal the Show

Indulge in these Caramelized Onion Potatoes, a creamy and cheesy dish that transforms dinner into a comforting feast.
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Prep Time 20 minutes
Cook Time 40 minutes
Resting Time 10 minutes
Total Time 1 hour 10 minutes
Servings: 6 servings
Course: Dinner
Cuisine: American
Calories: 400
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Potatoes
  • 2 lbs Russet Potatoes Avoid using waxy potatoes for best results.
  • 2 tbsp Unsalted Butter Can be substituted for olive oil.
For the Sauce
  • 1 cup Heavy Cream Half and half is a lighter alternative.
  • 1 cup Half & Half Can be replaced with milk if preferred.
  • 3 cloves Garlic Cloves Minced, consider using roasted garlic.
  • 1 tbsp Fresh Thyme Dried thyme can be substituted.
  • 2 leaves Bay Leaves Remove before serving.
  • 1 pinch Nutmeg Fresh grated delivers the best flavor.
For the Onions
  • 2 medium Sweet Yellow Onions Will change flavor profile if substituted.
  • 1 tbsp Sugar Omit for a less sweet taste.
For the Topping
  • 2 cups Gruyere Cheese Mixing in cheddar or mozzarella can create variations.
  • to taste Kosher Salt & Freshly Ground Pepper Essential for seasoning.

Equipment

  • Skillet
  • Saucepan
  • Baking dish
  • Mandoline Slicer

Method
 

Step-by-Step Instructions
  1. Melt 2 tablespoons of unsalted butter in a skillet over medium heat. Add thinly sliced sweet yellow onions, cover, and cook for about 5 minutes until softened. Uncover, season with salt and pepper, and stir occasionally until golden brown. Add 1 teaspoon of sugar and continue cooking until deeply amber, approximately 15-20 minutes.
  2. In a medium saucepan, combine 1 cup of heavy cream, 1 cup of half & half, minced garlic, thyme, bay leaves, and nutmeg over medium heat. Season with salt and pepper to taste. Bring to a gentle simmer and add thinly sliced russet potatoes, ensuring they are fully submerged. Cook gently for about 15 minutes until slightly tender but not fully cooked.
  3. Preheat your oven to 375°F (190°C) and butter a 9x13 inch baking dish. Layer half of the par-cooked potatoes, then half of the caramelized onions, and half of the grated Gruyere cheese. Repeat with remaining potatoes, onions, and cheese. Pour the remaining creamy sauce over the layers.
  4. Bake the assembled Caramelized Onion Potatoes au Gratin in the preheated oven uncovered for 35-40 minutes until cheese is bubbly and golden brown, and the potatoes are fork-tender. Allow to rest for 10 minutes before serving.

Nutrition

Serving: 1servingCalories: 400kcalCarbohydrates: 30gProtein: 10gFat: 25gSaturated Fat: 15gPolyunsaturated Fat: 1gMonounsaturated Fat: 3gCholesterol: 70mgSodium: 600mgPotassium: 700mgFiber: 3gSugar: 2gVitamin A: 800IUVitamin C: 10mgCalcium: 250mgIron: 1.5mg

Notes

Pre-make onions and refrigerate overnight for convenience. Always use starchy russet potatoes for optimal texture. Allow resting before serving for enhanced flavor.

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