My husband could eat spaghetti every day for the rest of his life. I found this recipe at All Recipes and it was DELICIOUS! We will definitely be making this again. My husband has never been so happy to take leftovers to work!
Cook spaghetti according to package directions. Meanwhile, in a large skillet, cook beef and onion over medium heat until meat is no longer pink; drain. Stir in the spaghetti sauce and seasoned salt; set aside.
In a large bowl, whisk the eggs, Parmesan cheese and butter. Drain spaghetti; add to egg mixture and toss to coat.
Place half of the spaghetti mixture in a greased 13-in. x 9-in. x 2-in. baking dish. Top with half of the cottage cheese, meat sauce and mozzarella cheese. Repeat layers. Cover and bake at 350 degrees F for 40 minutes. Uncover; bake 20-25 minutes longer or until cheese is melted.