Slow Cooker Kielbasa Rigatoni with Mozzarella

Smoked kielbasa, rigatoni, garlic tomato sauce, cream cheese, and mozzarella — all dumped into the slow cooker and left to bubble into a rich, cheesy pasta dinner. The hardest part is waiting for it to finish.

This slow cooker kielbasa rigatoni is the kind of dinner that feels like a weekend project but comes together with almost no effort. Smoked kielbasa brings a deep, savory flavor, while rigatoni soaks up a garlicky tomato sauce enriched with cream cheese and melted mozzarella.

The slow cooker does all the work, turning a handful of pantry staples into a creamy, comforting pasta bake that the whole family will love. It is perfect for busy weeknights when you want a home-cooked meal without standing over the stove. Just layer the ingredients, set the timer, and come back to a bubbling pot of cheesy pasta.

Ingredients

Why this recipe works

The slow cooker creates a moist, even heat that gently cooks the pasta and sausage together, allowing the flavors to meld without constant stirring. The cream cheese melts into the tomato sauce, creating a rich, velvety texture that clings to every piece of rigatoni. The low, slow cooking also renders the smoked kielbasa, infusing the entire dish with its smoky, savory essence.

Using dry pasta directly in the slow cooker might seem unusual, but it works beautifully because the pasta cooks in the sauce, absorbing all the flavor as it softens.

The rigatoni's ridges and tubes are perfect for catching the thick, cheesy sauce, and the kielbasa adds a hearty bite. This method is a true dump-and-go recipe, requiring minimal prep and no extra pots or pans.

Notes and substitutions

Smoked kielbasa is the star here, providing a smoky, garlicky flavor that stands up to the rich tomato sauce. It is already fully cooked, so it only needs to heat through, making it a convenient protein.

Choose a good-quality kielbasa from the refrigerated section, and slice it into thick rounds so it remains juicy. Rigatoni is the ideal pasta shape; its large tubes and ridges hold the sauce and cheese in every bite.

Garlic tomato basil sauce from a jar is a time-saver; look for one with a robust flavor. Cream cheese adds tang and creaminess, while whole-milk mozzarella gives that stretchy, melty finish.

For a lighter version, use part-skim mozzarella and reduced-fat cream cheese, but the full-fat versions yield the richest texture. This recipe can be adapted with other smoked sausages, but avoid raw sausage, as it would need to be browned first and would change the cooking time.

• smoked kielbasa: Smoked turkey kielbasa or smoked sausage of choice
• rigatoni: Penne, ziti, or other short tube pasta
• garlic tomato basil sauce: Marinara sauce plus 1 teaspoon dried basil and 2 minced garlic cloves
• whole-milk mozzarella: Part-skim mozzarella or provolone

Equipment

• 6-quart slow cooker
• Large skillet (optional, for browning kielbasa)
• Cutting board
• Chef's knife
• Measuring cups and spoons
• Wooden spoon or spatula