In a large skillet, brown the ground beef.
Add the garlic and cook for 1–2 minutes more.
Stir in the pasta sauce and Italian seasoning.
Season with salt and pepper to taste.
In your crockpot, spread 1/3 of the sauce on the bottom.
Add a layer of half of the ravioli.
Pour another 1/3 of the sauce over it.
Add the remaining ravioli on top.
Finish with the last portion of sauce.
Cook on low for 3–4 hours, until the ravioli are soft and cooked through.
About 1 hour before it’s done, sprinkle mozzarella cheese on top so it melts nicely as it finishes cooking.