Crock Pot Chicken Parmesan Subs are an easy, crowd-pleasing meal featuring tender chicken meatballs simmered in marinara and finished with melted mozzarella on toasted sub rolls.
The meatballs cook slowly in the sauce until juicy and flavorful, then are piled onto sub buns for a hearty sandwich that’s perfect for weeknights or casual gatherings. If you don’t have a slow cooker, the meatballs can be made in a skillet and finished in the oven with similar results.
Key Ingredients
- Marinara sauce: A 32–40 oz jar of good-quality marinara provides the base. Homemade works well if available.
- Eggs: Help bind the meatball mixture.
- Dried breadcrumbs: Use dried (not fresh) for proper texture; plain or Italian-style both work.
- Yellow onion, garlic, and parsley: These aromatics add essential flavor—don’t skip them.
- Oregano: A classic Italian herb; Italian seasoning can be substituted.
- Ground chicken: The main protein for the meatballs.
- Mozzarella cheese: Adds the gooey, melty topping.
- Sub buns: Toasted for a crisp exterior and soft interior to hold the saucy meatballs.
A complete list of ingredients with quantities and notes is included in the recipe card below.
How To Make Crock Pot Chicken Parmesan Subs
- Pour half of the marinara sauce into the slow cooker, spreading it into an even layer.
- In a large bowl, whisk the eggs, then add breadcrumbs, diced onion, chopped parsley, minced garlic, salt, oregano, and black pepper. Mix until combined, then add the ground chicken and mix by hand until evenly incorporated.
- Form the mixture into roughly 1½-inch meatballs and place them in the slow cooker. Pour the remaining marinara over the meatballs and cover.
- Cook on low for 4–6 hours, or until the meatballs are cooked through and very tender.
- About 5 minutes before serving, place 1–2 slices of mozzarella on the meatballs you plan to use for sandwiches, replace the lid, and let the cheese soften and melt.
- Use a large spoon to transfer meatballs and sauce onto toasted sub buns. Garnish with chopped parsley if desired and serve warm.
Tips For Success
- Sear for texture: If you have time, quickly sear the meatballs in a hot skillet with a little oil before adding them to the slow cooker. Searing helps them hold shape and adds a deeper flavor.
- Toast the buns: Toast sub rolls in the oven or under the broiler until golden and crisp so they don’t get soggy from the sauce.
Recipe FAQs
Store meatballs and sauce in a sealed container in the refrigerator and assemble sandwiches just before serving to prevent soggy bread. Allow the cooked mixture to cool before refrigerating.
Yes. Provolone, a mild cheddar, or an Italian cheese blend are all good alternatives to mozzarella.
Yes. You can shape and brown the meatballs in a skillet, then finish them in a covered pan with marinara on the stovetop or bake them in the oven until cooked through.
Hoagie rolls, French bread, or any sturdy sub rolls work well—toast them for best results.
Yes. Bell peppers, onions, or mushrooms can be cooked in the sauce with the meatballs, though they may release extra moisture that slightly thins the sauce.
Recipe summary: This Crock Pot Chicken Parmesan Subs recipe yields tender ground-chicken meatballs simmered in marinara and finished with melted mozzarella on toasted sub buns. It’s an easy, flavorful option for feeding a family or a group and adapts well to stovetop or oven methods if a slow cooker isn’t available.
Crock Pot Chicken Parmesan Subs
Equipment
- Slow cooker
Ingredients
- 32 oz jar marinara sauce
- 2 large eggs
- ½ cup dried breadcrumbs
- ½ cup diced yellow onion
- ⅓ cup chopped fresh parsley
- 3 cloves garlic, finely minced
- 1 tablespoon salt
- 1 teaspoon dried oregano
- ½ teaspoon ground black pepper
- 1 pound ground chicken
- 8–10 slices mozzarella cheese
- 6–8 sub buns
Instructions
- Pour half the marinara into the slow cooker.
- Whisk eggs in a large bowl. Add breadcrumbs, onion, parsley, garlic, salt, oregano, and pepper; mix. Add ground chicken and combine by hand.
- Form 1½-inch meatballs and arrange them in the slow cooker. Pour remaining marinara over the meatballs and cover.
- Cook on low for 4–6 hours, until meatballs are cooked through and tender.
- About 5 minutes before serving, top selected meatballs with 1–2 slices of mozzarella, cover, and allow cheese to melt.
- Transfer meatballs and sauce to toasted sub buns, garnish with parsley if desired, and serve.
Notes
- If desired, sear meatballs briefly in a hot skillet before slow cooking to improve texture and flavor.
- Toast rolls under the broiler or in the oven until golden to help prevent sogginess.
Nutrition
Nutrition info is approximate and provided for convenience.