Pour half of the marinara sauce into a slow cooker.
How to Make Crock Pot Chicken Parmesan Subs (1/4):
Make the meatball mixture.
In a bowl combine eggs, breadcrumbs, onion, parsley, garlic, salt, oregano, pepper, and ground chicken.
How to Make Crock Pot Chicken Parmesan Subs (2/4):
Form into 1.5-inch meatballs and place in the crock pot.
Pour the remaining marinara sauce over the meatballs.
How to Make Crock Pot Chicken Parmesan Subs (3/4):
Cook on low for 4-6 hours until the meatballs are cooked through.
Top with mozzarella slices, then place meatballs on sub buns and sprinkle with parsley.
How to Make Crock Pot Chicken Parmesan Subs (4/4):
This hearty and satisfying sandwich is always a hit!