Scalloped Potatoes Recipe - Chili Pepper Madness

Ingredients

• 2 pounds potatoes (thinly sliced (1/8" thick - a mandolin is best for consistency))
• 1 small onion (thinly sliced)
• 3 tablespoons butter
• 3 tablespoons flour
• 1 1/2 cups milk (heated)
• 1 tablespoon paprika + more as needed
• 1 teaspoon garlic powder
• ½ teaspoon cayenne pepper
• Salt and pepper to taste
• 1 ½ cups shredded cheddar cheese (or other melty cheese)