Crock Pot Stuffed Peppers

4 green bell peppers
1 lb. lean ground beef
1 cup cooked rice
1 small onion chopped
1/2 tsp. minced garlic (optional)
1 1/2 cup spaghetti sauce
salt & pepper to taste

Wash peppers. Cut off top and remove seeds. In a skillet brown beef, onions and garlic. Fold in rice. Add salt and pepper to taste. Stuff peppers placing them in the bottom of crock pot. Top with any extra beef/rice mixture. Pour spaghetti sauce over top of peppers. Set cooker on low for 6 - 7 hours.