Baked Ziti IV

INGREDIENTS

• 1 pound dry ziti pasta
• 1 1/2 tablespoons olive oil
• 1 onion, sliced
• 1 teaspoon minced fresh rosemary
• 4 cloves garlic, chopped
• 1/2 pound ground beef
• 1/2 pound ground pork sausage
• 1 1/2 (26 ounce) jars spaghetti sauce
• salt to taste
• 1 (6 ounce) package provolone cheese, sliced
• 3/4 cup sour cream
• 3/4 cup cottage cheese
• 1 (6 ounce) package mozzarella cheese, shredded
• 2 tablespoons freshly grated Parmesan cheese