The Best Cheesy Scalloped Potatoes

(from castro15’s recipe box)

Categories: Sides

Ingredients

  • 4 tbsp. butter
  • 1/2 cup chopped onion
  • 1 tsp ground mustard
  • 1 tsp salt
  • 1/2 tsp black pepper
  • 2 garlic cloves, minced
  • 1/4 cup flour
  • 2 cups whole milk
  • 1 block sharp Cheddar, shredded and divided
  • 1 block Monterey Jack, shredded
  • 3 lbs. medium russet potatoes, peeled and thinly sliced
  • 3/4 cup dry bread crumbs
  • Minced chives

Directions

  1. Preheat oven to 350. In a Dutch oven, melt the butter over medium heat. Add onion, mustard, salt and pepper; cook until onion is tender, 6-8 minutes. Add garlic; cook until fragrant, about 30 seconds. Whisk in flour; continue whisking 3-5 minutes.

  2. Whisk in milk; bring to a boil. Reduce heat; simmer, uncovered, until sauce is thickened slightly, 8-10 minutes. Slowly stir in 2 cups of cheddar; stir in Monterey Jack. Add potatoes and toss to coat. Simmer 10 minutes, stirring frequently to avoid scorching.

  3. Transfer potato mixture to a greased 13×9-inch baking dish. Top with remaining cheddar. Bake, uncovered, for 1 hour. Top with bread crumbs; return to oven until the potatoes are tender, 10-15 minutes. Let stand 15 minutes before serving. Sprinkle with minced chives.

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