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If you’re craving an easy, cheesy, and satisfying meal that the whole family will devour, this Cheesy Kielbasa Pasta Casserole is the ultimate comfort food. Loaded with smoky kielbasa sausage, tender pasta, and a rich, creamy cheese sauce, it’s baked until bubbling and golden brown.
Whether you’re feeding a crowd or meal-prepping for the week, this casserole brings big flavor with minimal fuss.
What is Cheesy Kielbasa Pasta Casserole?
Cheesy Kielbasa Pasta Casserole is a baked pasta dish that combines cooked pasta with sliced kielbasa sausage and a creamy, cheesy sauce. It’s typically baked in a casserole dish until bubbly and topped with extra cheese for a deliciously golden crust.
The smoky sausage paired with melty cheese makes it a comfort food favorite that’s perfect for potlucks, weeknight dinners, or freezer meals.
When I First Tried Cheesy Kielbasa Pasta Casserole
The first time I prepared this meal, it came together unexpectedly—and turned out to be a new family favorite. I had leftover kielbasa, half a box of pasta, and plenty of shredded cheese in the fridge. After a little experimentation, I ended up with a gooey, savory casserole that instantly became a hit at home. Since then, it’s been a go-to recipe when I need something hearty, easy, and loved by all.
Ingredients
- 12 oz pasta (penne or rotini work great)
- 14 oz kielbasa sausage, sliced into ¼-inch rounds
- 2 tablespoons butter
- 2 tablespoons all-purpose flour
- 2 cups milk (whole or 2%)
- 1 teaspoon garlic powder
- ½ teaspoon onion powder
- Salt and pepper, to taste
- 1 ½ cups shredded cheddar cheese
- 1 cup shredded mozzarella cheese
- ¼ cup grated Parmesan (optional)
- 2 tablespoons chopped parsley or green onions (for garnish)
Instructions
1. Preheat & Prep
Preheat your oven to 375°F (190°C). Lightly coat a 9×13-inch baking or casserole dish with cooking spray or a small amount of oil.
2. Cook the Pasta
Bring a large pot of salted water to a boil. Cook the pasta just until al dente, about 1–2 minutes less than package instructions. Drain and set aside.
3. Brown the Kielbasa
In a large skillet over medium heat, sauté the sliced kielbasa for about 4–5 minutes, or until lightly browned. Remove from the heat and set aside.
4. Make the Cheese Sauce
Using the same pan, melt the butter over medium heat. Stir in the flour and cook for 1 to 2 minutes, whisking constantly to create a smooth roux. Gradually pour in the milk, whisking continuously to avoid any lumps. Season the sauce with garlic powder, onion powder, salt, and pepper to taste.
Cook the sauce until thickened, about 5 minutes, then stir in 1 cup cheddar and ½ cup mozzarella until melted and smooth.
5. Combine & Assemble
In a large mixing bowl or the pasta pot, combine the cooked pasta, browned kielbasa, and cheese sauce. Mix until everything is evenly coated. Carefully pour this creamy mixture into the greased casserole dish, spreading it evenly.
Top with the remaining ½ cup cheddar, ½ cup mozzarella, and Parmesan if using.
6. Bake
Bake uncovered for 20–25 minutes, or until the cheese is melted and the top is lightly golden. If you like a golden, crispy top, place the dish under the broiler for 2 to 3 minutes near the end—just keep a close eye to prevent burning.
7. Garnish & Serve
Let the casserole cool for about 5 minutes before serving. Garnish with chopped parsley or green onions for a pop of color and flavor.
Tips for Success
Don’t Overcook the Pasta: It will continue cooking in the oven, so keep it al dente.
Swap the Cheese: Try Gouda, Monterey Jack, or Colby for different cheesy flavors.
Add Veggies: Stir in sautéed bell peppers, spinach, or mushrooms for extra nutrition.
Make Ahead: Assemble the casserole and refrigerate it for up to 24 hours before baking.
Variations
Spicy Kielbasa Casserole
Use hot kielbasa and add red pepper flakes or a splash of hot sauce to the cheese sauce.
Veggie-Loaded
Mix in steamed broccoli or peas for a balanced one-dish meal.
Tomato Twist
Add ½ cup of marinara or diced tomatoes to the cheese sauce for a tangy flavor boost.
What to Serve With Cheesy Kielbasa Pasta Casserole
This dish is filling on its own, but here are some delicious side ideas:
- Garlic bread or dinner rolls
- Caesar or garden salad
- Roasted vegetables like Brussels sprouts or carrots
- Pickles or sauerkraut for a tangy contrast
Storage & Reheating
Refrigerator
Store leftovers in an airtight container in the fridge for up to 4 days.
Freezer
Freeze the unbaked or fully baked casserole for up to 2 months. Wrap tightly in foil and plastic.
Reheating
Microwave individual portions or reheat in the oven at 350°F, covered with foil, until warmed through. If the pasta dries out while reheating, simply stir in a splash of milk to bring back its creamy consistency.
Nutrition Info (Per Serving)
Calories: 480
Protein: 21g
Fat: 26g
Carbohydrates: 40g
Sodium: 900mg
Fiber: 2g
Sugar: 5g
Nutrition may vary based on brands and substitutions.
Final Thoughts
This Cheesy Kielbasa Pasta Casserole is the perfect blend of creamy, cheesy, and savory. It’s an easy and versatile recipe that comes together quickly and pleases even picky eaters. Whether you’re prepping it ahead or baking it fresh, this cozy casserole is always a winner at the dinner table.
More Recipes:
Crockpot Mac and Cheese With Kielbasa Recipe
One Pot Smoked Sausage, Green Beans, and Potatoes
Cheesy Kielbasa Pasta Casserole Recipe
Ingredients
- 12 oz pasta (penne or rotini work great)
- 14 oz kielbasa sausage, sliced into ¼-inch rounds
- 2 tablespoons butter
- 2 tablespoons all-purpose flour
- 2 cups milk (whole or 2%)
- 1 teaspoon garlic powder
- ½ teaspoon onion powder
- Salt and pepper, to taste
- 1 ½ cups shredded cheddar cheese
- 1 cup shredded mozzarella cheese
- ¼ cup grated Parmesan (optional)
- 2 tablespoons chopped parsley or green onions (for garnish)
Instructions
- Preheat your oven to 375°F (190°C). Lightly coat a 9×13-inch baking or casserole dish with cooking spray or a small amount of oil.
- Bring a large pot of salted water to a boil. Cook the pasta just until al dente, about 1–2 minutes less than package instructions. Drain and set aside.
- In a large skillet over medium heat, sauté the sliced kielbasa for about 4–5 minutes, or until lightly browned. Remove from the heat and set aside.
- Using the same pan, melt the butter over medium heat. Stir in the flour and cook for 1 to 2 minutes, whisking constantly to create a smooth roux. Gradually pour in the milk, whisking continuously to avoid any lumps. Season the sauce with garlic powder, onion powder, salt, and pepper to taste.
- Cook the sauce until thickened, about 5 minutes, then stir in 1 cup cheddar and ½ cup mozzarella until melted and smooth.
- In a large mixing bowl or the pasta pot, combine the cooked pasta, browned kielbasa, and cheese sauce. Mix until everything is evenly coated. Carefully pour this creamy mixture into the greased casserole dish, spreading it evenly.
- Top with the remaining ½ cup cheddar, ½ cup mozzarella, and Parmesan if using.
- Bake uncovered for 20–25 minutes, or until the cheese is melted and the top is lightly golden. If you like a golden, crispy top, place the dish under the broiler for 2 to 3 minutes near the end—just keep a close eye to prevent burning.
- Let the casserole cool for about 5 minutes before serving. Garnish with chopped parsley or green onions for a pop of color and flavor.
Norma Parker is a recipe creator at Nomqom.com. She shares simple, tasty, and easy home-cooking ideas for everyday meals. Her goal is to help home cooks make delicious food with confidence.