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Oven-Baked 4-Ingredient Potato Au Gratin Cups

Individual potato au gratin cups are made with thinly sliced russet potatoes, heavy cream, onion, and cheddar cheese. These golden, creamy muffin-tin potato stacks make an elegant holiday side dish, dinner side, or cozy comfort food appetizer.
Prep Time 20 minutes
Cook Time 45 minutes
Total Time 1 hour 5 minutes
Course Appetizer, Comfort Food, Holiday Dish, Side Dish, Vegetarian
Cuisine French-American
Servings 12 cups
Calories 245 kcal

Ingredients
  

  • 2 lb russet potatoes peeled and very thinly sliced
  • 1 1/2 cups heavy cream
  • 1/4 cup yellow onion very finely minced or grated
  • 2 cups shredded mild cheddar cheese divided
  • 1 tsp kosher salt
  • 1/2 tsp black pepper freshly ground
  • butter or neutral oil for greasing the muffin tin

Instructions
 

  • Preheat the oven to 375°F and grease a 12-cup muffin tin well with butter or neutral oil.
  • Place the muffin tin on a rimmed baking sheet to catch any overflow.
  • Peel the potatoes and slice them very thinly, about 1/8 inch thick or thinner.
  • In a small bowl or measuring cup, stir together the heavy cream, minced onion, kosher salt, and black pepper.
  • Sprinkle 1 cup of shredded cheddar cheese evenly into the bottoms of the muffin cups.
  • Layer the potato slices into each muffin cup, pressing down gently and filling each cup to the top.
  • Stir the cream mixture again, then slowly spoon it over each potato cup, allowing it to seep between the layers.
  • Top each cup with the remaining 1 cup of shredded cheddar cheese.
  • Bake on the middle rack for 35–45 minutes, until the tops are deeply golden and a knife pierces the potatoes easily.
  • Let the au gratin cups rest in the pan for at least 10 minutes.
  • Run a thin knife or small offset spatula around each cup, then gently lift and transfer to a serving platter.

Notes

Grating the onion helps it blend smoothly into the cream. For extra richness, swap part of the cheddar with Gruyère or Swiss cheese.

Nutrition

Calories: 245kcal
Keyword cheddar potatoes, creamy potatoes, holiday side dish, muffin tin potatoes, potato au gratin
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