The Best Cheesy Scalloped Potatoes Recipe for Cozy Family Dinners - That's My Home

Ingredients

• 4 russet potatoes, peeled and sliced into 0.25-inch slices (about 2 pounds / 907 grams)
• 1 yellow onion, sliced into rings
• 1.5 cups mild cheddar cheese, shredded
• 3 tablespoons unsalted butter
• 2 cups whole milk, room temperature
• 3 tablespoons all-purpose flour
• 0.5 teaspoon kosher salt
• Salt and pepper, to taste