Brown ground beef and sausage together and drain (I also rinse with water to wash away some the fat).
Put meat in food processor and pulse until it is fine and no chunks of meat left.
Put in pot and add spaghetti sauce, tomato sauce, seasoning and sugar. Let simmer while noodles are cooking.
Mix cheeses together using 2 cups of mozzarella with all of the ricotta and parmesan cheese. Mix in the egg.
When ready to assemble, put some sauce in the bottom of a 9 x 13 pan and then start layering the noodles, cheese mixture and sauce. There should be three layers of 4 noodles and you should end with sauce. Sprinkle with the remaining cup of mozz. cheese. The pan will be full.
Bake in 350 degree oven for 30-45 minutes. Cover dish with foil for the first 15 minutes so cheese will not get too brown.
When done, let set for 5-10 minutes before cutting.
You can prepare this the day before and put it in the refrigerator. Bake the next day and Enjoy!