16 ounces dry pasta
3 tablespoons butter
2-3 cloves garlic, minced
3 tablespoons flour
1 cup chicken broth
2 cups half and half
1/2 teaspoon salt
1/4 teaspoon pepper
1/4 teaspoon cayenne pepper
1/4 teaspoon red pepper flakes
1/2 cup grated Parmesan cheese
2 cups mozzarella cheese, divided
1-2 tablespoons chopped fresh parsley
1 (12 oz) fully cooked smoked sausage, any variety
Cook pasta according to package directions until just al dente; drain.
While pasta cooks, melt butter in a large skillet over medium heat. Add garlic and cook until fragrant, 1-2 minutes. Stir in flour.
Whisk in chicken broth until smooth, then stir in half and half.
Add salt, pepper, cayenne, and red pepper flakes and simmer until sauce is thickened, about 5 minutes.
Stir in Parmesan cheese and 1 cup of mozzarella until cheeses are melted and smooth.
Slice sausage into 1/4 inch pieces and add to the sauce, along with the chopped parsley and cooked pasta. Season with additional salt and pepper if needed.
Preheat broiler. Pour the pasta mixture into a lightly greased, 9x13 inch baking dish. Top with remaining mozzarella cheese.
Broil for 2-3 minutes, or until cheese is bubbly and golden.