Kielbasa Casserole

Ingredients (9)

• 4 cups uncooked penne pasta
• 1-1/2 pounds smoked Polish sausage or kielbasa, cut into 1/2-inch slices
• 2 cans (10-3/4 ounces each) condensed cream of mushroom soup, undiluted
• 1 jar (16 ounces) sauerkraut, rinsed and well drained
• 3 cups shredded Swiss cheese, divided
• 1-1/3 cups 2% milk
• 4 green onions, chopped
• 2 tablespoons Dijon mustard
• 4 garlic cloves, minced