Cook ground beef and onion on medium high until brown. Drain fat. Add
next seven ingredients; heat to boiling. Reduce heat. Simmer,
uncovered, until thickened. squeeze liquid from spinach. Combine with
cottage cheese. Season to taste with salt and pepper. Spoon meat
mixture into 13x9" baking dish.
Sprinkle 1/2 of mozzarella cheese. Top with spinach. Sprinkle
remaining mozzarella on top. Bake at 350 for 25-30 minutes until hot
and bubbly.