Easy Slow-Cooker Meatballs

From: allrecipes.com

Ingredients:
1 1/2 pounds of ground beef
1 1/4 cups Italian seasoned bread crumbs
1/4 cup chopped fresh parsley
2 garlic cloves, minced
1 medium yellow onion, chopped
1 egg, beaten
1 (28 oz.) jar spaghetti sauce
1 (16 oz.) can crushed tomatoes
1 (14.25 oz.) can tomato puree

Directions:
In a bowl, mix the ground beef, bread crumbs, parsley, garlic, onion, and egg. Shape the mixture into 16 meatballs.

In a slow cooker, mix the spaghetti sauce, crushed tomatoes, and tomato puree. Place the meatballs into the sauce mixture. Cook on low for 6 to 8 hours.