Our Potato Sausage Casserole is the real deal. Potatoes, ground pork sausage, and shredded cheese are covered in a basic white sauce to form an easy casserole that is reminiscent of what Mom or Grandma would serve.
Preheat oven to 375 degrees F. Spray a 13 x 9 inch baking dish with non-stick cooking spray.
Boil in salted water the cleaned, sliced potatoes for 5 minutes. Reserve 1 cup of cooking water; drain the remaining water.
Brown pork sausage loosely; drain excess grease.
In a small saucepan; melt margarine. Add flour and stir until smooth.
Slowly add 1 cup reserved potato water and milk; whisking over medium heat until smooth.
In the casserole dish, layer all potatoes, onions, sausage and cheese. (First layer potatoes, second layer onions, etc.)
Pour white sauce over the entire casserole.
Bake for 45 minutes and remove from oven. Let sit for 10 minutes before serving.