Heat oven to 400. Spray a 9" x 13" pan w/ cooking spray. Cook pasta as directed and drain. In lg skillet, heat 1 tbsp oil over medium heat. Add sausages, cook, crumbling w/ spoon until cooked through. Remove from heat. Transfer to lg bowl.
In same pan, heat 4 tsp oil over med-high heat. Add eggplant. Cook, stirring until tender. Transfer to bowl w/ sausages. Place pan over medium heat. Heat 2 tsp oil. Add onion. Cook until soft. Add garlic, cook 1 min.
Add tomatoes and their juices. Simmer until thickened. In bowl w/ sausages, add pasta, basil, olives, 2 cups mozzarella cheese, and tomato sauce mix. Mix to combine. Season w/ salt & pepper. Transfer mix to baking pan. Sprinkle w/ remaining mozzarella cheese and parmesan cheese. Cover pan w/ foil. Bake 25 min. Uncover, broil for 4 mins.