When everyone took a bite of this casserole, they couldn’t stop eating it

Ingredients:

1.5 lbs smoked Polish sausage or kielbasa, sliced

4 cups penne pasta

2 tablespoons butter

2 tablespoons flour

2.5 cups milk

1 cup sour cream

2 tablespoons Dijon mustard

1 teaspoon garlic powder

16 ounces sauerkraut (1 jar), washed and thoroughly drained

3 cups Swiss cheese, grated and divided

Salt and pepper, to taste

Instructions: