Beefy Cheesy Ravioli

No-Stick cooking spray
1 can (14.5oz.) diced tomatoes with basil, garlic and oregano
1 can (10.75oz.) cheddar cheese soup
2 tsp chopped garlic
1 bag (25 oz.) frozen beef ravioli, not thawed
1 cup grated parmesan cheese
1 cup shredded mozzarella cheese

Coat 5 quart slow cooker with cooking spray. In large bowl, stir together pasta sauce, tomatoes, cheese soup, and garlic. Spoon 1/3 of the sauce into slow cooker; top with 1/3 of ravioli. Sprinkle 1/3 cup each Parmesan and mozzarella cheeses over ravioli. Repeat layers 2 more times. Cover and cook on high heat setting for 3-4 hours.