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–+ servings

OVEN BAKED 3-INGREDIENT LYONNAISE POTATOES RECIPE

These easy oven baked Lyonnaise potatoes feature thinly sliced potatoes and sweet, tender onions cooked in salted butter. A simple, comforting side dish with golden edges and rich flavor.
Prep Time 15 minutes
Cook Time 1 hour 15 minutes
Course Side Dish
Cuisine American
Servings 6

Ingredients
  

  • 2 pounds Yukon Gold potatoes sliced into ⅛-inch rounds
  • 2 large yellow onions halved and thinly sliced
  • 6 tablespoons salted butter divided

Instructions
 

  • Wash the potatoes and slice them into uniform ⅛-inch rounds. Peel them first if desired.
  • Peel, halve, and thinly slice the yellow onions.
  • Place 2 tablespoons of butter in a 9×13-inch baking dish and melt in the oven for two to three minutes.
  • Add the sliced onions, toss with the butter, and bake uncovered for 12 to 15 minutes, stirring halfway through.
  • Melt the remaining 4 tablespoons of butter. Toss the sliced potatoes with the melted butter in a large bowl.
  • Remove the baking dish from the oven. Add the potatoes and gently combine them with the softened onions. Spread into an even layer.
  • Cover tightly with aluminum foil and bake for 35 to 40 minutes, until the potatoes are nearly tender.
  • Remove the foil, gently turn some of the top slices, and continue baking uncovered for 20 to 25 minutes, until tender and golden brown.
  • Remove from the oven and allow the potatoes to rest for five minutes before serving warm.

Notes

  • Slice the potatoes evenly to help them cook at the same rate.
  • Salted butter provides the seasoning while keeping the recipe to three ingredients.
  • Don't skip the covered baking stage, which allows the potatoes to soften.
  • Baking times may vary depending on the thickness of the slices and the baking dish.
  • For additional browning, broil for one to two minutes at the end, watching closely.
  • Refrigerate leftovers in an airtight container for up to four days.