Hot Dog Casserole - Master recipes

Ingredients

• 3 tablespoons butter -
• 2 tablespoons all-purpose flour -
• 1 to 1-1/2 teaspoons salt -
• 1/4 to 1/2 teaspoon pepper -
• 1-1/2 cups 2% milk -
• 5 medium red potatoes, thinly sliced -
• 1 package (1 pound) hot dogs, halved lengthwise and cut into 1/2-inch slices -
• 1 medium onion, chopped -
• 1/3 cup shredded cheddar cheese -
• Chopped green onions, optional -