In A Skillet, Cook Beef, Onion And Garlic Over Medium Heat Until Meat Is No Longer Pink; Drain. Transfer To A Slow Cooker. Stir In The Tomato Sauce, Tomatoes And Seasonings. Cover And Cook On Low For 7-8 Hours Or Until Bubbly. Increase Heat To High; Stir In Pasta, Spinach And Cheeses. Cover And Cook For 10 Minutes Or Until Heated Through And Cheese Is Melted.