KIELBASA, PASTA AND CHEDDAR BAKE

Steps:

• Preheat oven to 350 degrees Fahrenheit.
• Coat a 10-cup baking dish with non-stick cooking spray.
• In large pot of lightly salted boiling water, cook rigatoni until al dente, firm but tender, following package instructions. Drain.
• In large heavy-bottom saucepan, heat olive oil over medium-high heat.
• Add onion and cook until softened, 5 to 7 minutes.
• Stir in flour, cook 1 minute.
• Gradually whisk in milk.
• Bring to boil, stirring continuously; boil until thickened, about 1 minute.
• Remove from heat.
• Set aside 1 cup of cheese for topping casserole.
• Whisk remaining 2 cups cheese, hot-pepper sauce, and salt into mixture.
• In pasta pot, combine rigatoni, cheese sauce, kielbasa and apples into baking dish.
• Cover.
• Bake covered for 30 minutes.
• Uncover and stir.
• Sprinkle with 1 cup remaining cheese and scallions.
• Bake until cheese is melted, about 10 minutes.
• Let stand 10 minutes.
• Serve.