Ingredient:

• 3 cups uncooked ziti or other small tube pasta
• 1/2 pound Italian sausage links
• 1/4 cup butter, cubed
• 1/4 cup all-purpose flour
• 1-1/2 teaspoons salt, divided
• 1/4 teaspoon plus 1/8 teaspoon pepper, divided
• 2 cups 2% milk
• 1/2 cup grated Parmesan cheese, divided
• 1 large egg, lightly beaten
• 2 cups 4% cottage cheese
• 1 tablespoon minced fresh parsley
• 1 cup shredded part-skim mozzarella cheese
• Paprika