Easy Crockpot Meatball Sub Pasta Bake

This five-ingredient Crockpot meatball sub pasta bake is the ultimate busy-weeknight dinner. You literally dump everything into the slow cooker, set it, and forget it. Three hours later, you have a hearty, cheesy, saucy pasta dish that tastes like a meatball sub in casserole form.

The best part? It uses frozen meatballs and uncooked penne, so there's minimal prep. The cream cheese melts into the sauce, creating a rich, creamy texture that balances the tangy marinara. Topped with melted mozzarella and pepperoni, this is comfort food at its finest.

When you need a dinner that practically makes itself, this Crockpot meatball sub pasta bake is the answer. With just five main ingredients and a slow cooker, you can have a satisfying meal on the table with almost no effort. The frozen meatballs cook slowly in the marinara and beef broth, infusing the sauce with flavor while the penne absorbs the liquid and becomes perfectly tender.

The cream cheese adds a subtle richness that turns the sauce into something special, and the melted mozzarella on top is the finishing touch. Serve it straight from the slow cooker for a no-fuss weeknight dinner that the whole family will love.

Ingredients

Why this recipe works

The dump-and-go method means you don't have to brown meatballs, boil pasta, or babysit a pot on the stove. Everything goes into the slow cooker at once, and the low, steady heat does the work.

The uncooked penne absorbs the seasoned broth and marinara as it cooks, so it comes out perfectly al dente without a separate pot of boiling water. The frozen meatballs thaw and cook in the sauce, releasing their juices and making the sauce even more flavorful.

The cream cheese is the secret to the creamy, luscious texture. As it melts, it thickens the sauce and adds a subtle tang that balances the acidity of the marinara. The mozzarella and pepperoni on top create a bubbly, golden crust that mimics the cheese pull of a classic meatball sub.

Cooking on low for three hours allows the flavors to meld and develop, resulting in a deeply savory dish that tastes like it simmered all day, even though it only took a few minutes to assemble.

Notes and substitutions

Use a good-quality frozen Italian meatball for the best flavor. Homestyle meatballs with herbs and cheese work particularly well. If you prefer a spicier dish, choose meatballs with red pepper flakes. The roasted garlic marinara adds a mellow sweetness and depth, but any marinara or pasta sauce will work. For a richer sauce, use a marinara with olive oil and herbs.

The slow cooker size matters: a 6-quart model is ideal for this amount of food. If your slow cooker is smaller, you may need to reduce the recipe by half. The pasta needs enough liquid to cook properly, so make sure the penne is mostly submerged when you start. If the mixture looks dry after 3 hours, add a splash of broth or water. Leftovers can be stored in the refrigerator for up to 4 days.

• frozen Italian meatballs: Use frozen turkey meatballs or plant-based meatballs for a different flavor. Cook time may vary slightly.
• roasted garlic marinara: Any marinara or pasta sauce works, but roasted garlic adds extra depth. Choose a sauce with no added sugar if preferred.
• beef broth: Chicken or vegetable broth can replace beef broth to lighten the flavor.
• penne: Other short pasta shapes like rigatoni, ziti, or fusilli work well. Adjust cook time if using a different shape.

Equipment

• 6-quart slow cooker
• Measuring cups
• Cutting board
• Chef's knife
• Large spoon or spatula