Slow Cooker Parmesan Kielbasa Rigatoni Step-by-step instructions

Before you start

Before starting, slice the kielbasa into 1/2-inch rounds. Measure the cheese and have the sauce jar open. No need to pre-cook the pasta or the sausage. Ensure the slow cooker insert is clean and dry.

If using a 6-quart slow cooker, the recipe fits comfortably. For a 7-quart, it will be about three-quarters full. Have a large spoon ready for serving. The prep takes only 10 minutes, mostly slicing and measuring.

Instructions

Layer and Set

1. 1Layer the ingredients
   Place the sliced kielbasa evenly in the bottom of a 7-quart slow cooker. Spread the rigatoni over the kielbasa. Pour the roasted garlic tomato basil sauce over the pasta, covering as much as possible. Sprinkle the shredded Italian cheese blend and grated Parmesan over the top.
   Look for The ingredients are layered in the order listed, with the cheese on top.
   Tip Do not stir after adding the cheese; it will melt and form a golden crust during cooking.

At the end of this phase, you have a neat layering of kielbasa, pasta, sauce, and cheese in the slow cooker. The cheese is piled on top, and the sauce is visible around the edges. The kitchen smells of garlic and tomato. You're ready to cover and walk away.

Slow Simmer

2. 2Slow cook until bubbly
   Cover the slow cooker and cook on LOW for 4 hours, or on HIGH for 2 hours. Do not open the lid during the first 3 hours to retain heat and moisture. The dish is done when the pasta is tender and the sauce is bubbling at the edges.
   Look for The cheese is melted and golden, and the sauce is bubbling around the edges.
   Tip If the pasta seems too al dente after the time is up, stir gently and cook for 15 more minutes.

After the cooking time, the cheese is melted and golden, and the sauce is bubbling at the sides. The aroma is rich and savory with a hint of smoke from the kielbasa. The pasta is tender, and the sausage is heated through. Stir gently to combine and check for doneness.

Serve and Enjoy

3. 3Serve hot
   Turn off the slow cooker. Stir the pasta gently to coat with sauce. Serve immediately on warm plates, scooping from the bottom to get the kielbasa and sauce. Garnish with extra Parmesan if desired.
   Look for The pasta is tender, the sauce is thick and clinging, and the cheese is stretchy.
   Tip For a crispy top, broil the plated pasta for 2 minutes in the oven.

The pasta is coated in a thick, meaty sauce, and the cheese stretches as you scoop. The dish is piping hot and ready to serve. The texture is creamy from the melted cheese, and the flavor is balanced with the smoky sausage and tangy tomato.

Common mistakes

Avoid opening the slow cooker lid frequently, as this releases heat and extends cooking time. Do not stir the ingredients after adding the cheese, as this can prevent the golden crust from forming.

If the pasta seems too dry after cooking, add a splash of warm water or extra sauce. Overcooking can make the pasta mushy, so check at the minimum time. If the cheese browns too quickly, it's okay — it adds flavor. Use a timer to avoid forgetting the dish.

How to tell it’s done

The dish is done when the pasta is tender but still has a slight bite, and the sauce is bubbling around the edges.

The cheese on top should be melted and starting to brown in spots. If you insert a fork into a piece of rigatoni, it should slide in easily but not be mushy.

The internal temperature of the sausage and sauce should be at least 165°F (74°C) if you are checking with a thermometer, though the sausage is already cooked and only needs to be heated through.