In a small bowl, mix together cream cheese, 1/2 cup mozzarella cheese, and cottage cheese. Set aside.
Cook lasagna noodles as directed on package. Set aside.
In a 9 x 13 inch baking dish, pour 1 cup of spaghetti sauce in the bottom and spread evenly.
Take 1 lasagna noodle and spread a thin layer of cheese mixture down the length of the noodle. Place 2 meatballs on one end of the noodle and roll up tightly. Place rolled up noodle in the baking dish, seam side down. Repeat with remaining noodles and meatballs.
Pour remaining spaghetti sauce on top of roll ups and top with remaining cheese.
Cover pan with aluminum foil and bake for 20 minutes or until cheese has melted.