Macaroni and cheese is the ultimate comfort food. Creamy. Cheesy. Carb-loaded. Perfect. But let us be honest. Boxed mac and cheese is fine. Homemade mac and cheese is better, but it requires a separate pot for the pasta, a saucepan for the sauce, and plenty of stirring. This Oven-Baked 5-Ingredient Kielbasa Mac and Cheese eliminates almost all of that. You mix raw pasta, sliced kielbasa, milk, and cheese in a baking dish. You cover it with foil. You bake. That is it.
The pasta cooks right in the milk, absorbing the liquid and releasing starch to create a thick, creamy sauce. The kielbasa adds smoky, savory pockets of meat. The sharp cheddar melts into a golden, bubbly crust. No boiling. No draining. No separate sauce pot. One dish. Five ingredients. A dinner that tastes like you spent hours in the kitchen.
Let me show you how to make it.
Why This Recipe Is a Keeper
Before we dive into the method, here is why this kielbasa mac and cheese will become a family favorite.
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Only 5 ingredients. Pasta, kielbasa, milk, cheese, salt.
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No boiling the pasta. It cooks right in the baking dish.
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No separate sauce. The milk and pasta starch create the sauce.
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One dish. Minimal cleanup.
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Budget-friendly. Kielbasa and elbow macaroni are inexpensive.
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Crowd-pleasing. Smoky sausage and creamy cheese are a winning combination.
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Perfect for busy nights. Hands-off baking.
Ingredients
Servings: 6
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12 ounces smoked kielbasa, sliced into 1/4-inch rounds
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2 cups raw dry elbow macaroni (about 8 ounces)
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3 cups whole milk
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3 cups shredded sharp cheddar cheese, divided
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1 teaspoon kosher salt (plus more to taste)
Ingredient Notes
Smoked kielbasa: Use fully cooked smoked kielbasa. Slice it into 1/4-inch rounds. The smoky, garlicky flavor of kielbasa pairs beautifully with sharp cheddar. Andouille sausage can be substituted for a spicier version. Turkey kielbasa works for a lighter option. Do not use raw sausage.
Raw dry elbow macaroni: Use standard elbow macaroni. Do not cook it before adding to the dish. The pasta cooks directly in the milk. Do not use whole wheat pasta, which requires more liquid and a longer cook time. Do not use fresh pasta.
Whole milk: Whole milk is essential for creamy, rich mac and cheese. The fat content prevents curdling and creates a smooth sauce. Reduced-fat milk will work but the sauce will be thinner. Do not use skim milk.
Shredded sharp cheddar cheese: Sharp cheddar provides bold, tangy flavor that stands up to the smoky kielbasa. Shred your own cheese from a block if possible. Pre-shredded cheese contains anti-caking agents that can affect melting. Reserve 1 cup of cheese for the top crust.
Kosher salt: Kosher salt has larger crystals than table salt. If using table salt, reduce to 3/4 teaspoon. The salt enhances the cheese and kielbasa flavors. Do not skip it.
Step-by-Step Instructions
Step 1: Preheat and Prepare
Preheat your oven to 375°F (190°C). Lightly grease a deep 9×13-inch glass baking dish or a similar deep glass casserole dish so the pasta does not stick. A deep dish is important to prevent the milk from boiling over.
Step 2: Add the Pasta and Kielbasa
Add the raw dry elbow macaroni to the deep glass dish. Spread it out in an even layer. Scatter the sliced kielbasa rounds over the macaroni so they are fairly evenly mixed. Use your hands to gently toss the kielbasa and pasta together right in the dish.
Step 3: Add the Milk and Salt
Pour the whole milk evenly over the macaroni and kielbasa. Sprinkle in the kosher salt. Gently toss again with clean hands or a large spoon to make sure the milk reaches all the pasta and everything is coated.
Step 4: Add Most of the Cheese
Sprinkle 2 cups of the shredded sharp cheddar cheese over the top. Gently fold it into the macaroni and kielbasa mixture so the cheese is mixed throughout. Smooth the top a bit with your spoon or hands so it bakes evenly.
Step 5: Top with Remaining Cheese
Top the dish with the remaining 1 cup of shredded cheddar cheese. Spread it in an even layer. This top layer will melt into a golden, bubbly crust.
Step 6: Cover and Bake
Cover the glass dish tightly with aluminum foil. Bake on the center rack for 35 minutes. The pasta will start to soften, and the mixture will be hot and bubbly around the edges.
Step 7: Uncover and Stir
Carefully remove the foil. Watch for the hot steam. Give the pasta a gentle stir to loosen any pieces that may be sticking and to help the sauce come together. If it looks a little dry, you can splash in 1/4 cup more milk. It should usually be creamy as is.
Step 8: Finish Baking
Return the dish to the oven, uncovered. Bake for another 15 to 20 minutes. The mac and cheese is ready when the pasta is tender, the cheese on top is melted and lightly golden, and the sauce looks thick and creamy.
Step 9: Rest and Serve
Let the kielbasa mac and cheese rest for about 5 to 10 minutes before serving. This helps the sauce thicken slightly so it is easier to scoop and not too runny. Taste and add a pinch more salt if needed before bringing it to the table.
How to Serve Kielbasa Mac and Cheese
This mac and cheese is a complete meal on its own, but a few simple sides can round it out.
With a Green Salad: A simple salad with a tangy vinaigrette cuts through the richness.
With Roasted Vegetables: Roasted broccoli, asparagus, or green beans add color and balance.
With Crusty Bread: A loaf of crusty bread is perfect for sopping up any extra cheese sauce.
With Hot Sauce: A few dashes of hot sauce add heat that complements the smoky kielbasa.
With Steamed Broccoli: Mix steamed broccoli into the mac and cheese for extra vegetables.
As a Side Dish: Serve alongside grilled chicken or pork chops.
Variations & Tips
Make It Spicier: Use andouille sausage instead of kielbasa. Add 1/2 teaspoon of red pepper flakes or a few dashes of hot sauce.
Make It With Different Sausage: Use smoked sausage, chorizo, or hot links. Each will change the flavor profile.
Make It With Different Cheese: Substitute Monterey Jack, Gouda, or a blend of Italian cheeses for half of the cheddar.
Make It With Broccoli: Add 2 cups of fresh or frozen broccoli florets to the dish before baking.
Make It With Peppers: Add 1 chopped bell pepper or a few sliced jalapeños.
Make It With Breadcrumbs: Sprinkle 1/2 cup of buttered breadcrumbs over the top during the last 10 minutes of baking.
Make It Without Meat: Omit the kielbasa. Add 1 cup of sliced mushrooms or 1 cup of roasted red peppers.
Make It Gluten-Free: Use gluten-free elbow macaroni. Add 1/4 cup more milk, as gluten-free pasta absorbs more liquid.
Pro Tips for Absolute Success
Use a deep baking dish. A shallow dish may allow the milk to boil over. A 9×13-inch dish that is at least 2 inches deep is ideal.
Do not cook the pasta first. The pasta cooks directly in the milk. Pre-cooked pasta would become mushy and waterlogged.
Use whole milk. Lower-fat milks will not create the same creamy sauce. Whole milk is essential.
Cover tightly with foil. A tight seal traps the steam that cooks the pasta. A loose seal will let steam escape, and the pasta may end up undercooked.
Stir after removing the foil. This redistributes the pasta and helps the sauce come together evenly.
Let it rest before serving. The 5 to 10 minute rest allows the sauce to thicken. Skipping this step results in a thinner, runnier mac and cheese.
Use sharp cheddar. Mild cheddar does not have enough flavor to stand up to the smoky kielbasa. Sharp or extra sharp is best.
Frequently Asked Questions
Can I use a different pasta shape?
Yes. Penne, rotini, shells, or cavatappi all work well. Adjust the bake time slightly. Smaller pasta may cook faster. Larger pasta may need more time.
Can I use half-and-half instead of milk?
Yes. Half-and-half will create an even richer, creamier sauce. Reduce the amount to 2 1/2 cups.
Can I use a different cheese?
Yes. Monterey Jack, Gouda, provolone, or a blend of Italian cheeses all work. Each will change the flavor profile.
Can I add more vegetables?
Yes. Add up to 2 cups of fresh or frozen vegetables. Broccoli, spinach, bell peppers, and mushrooms all work well.
Can I make this ahead of time?
Assemble the dish completely but do not bake it. Cover and refrigerate for up to 24 hours. Bake as directed, adding 10 to 15 minutes to the covered bake time.
Can I freeze the leftovers?
Freezing is not recommended. The texture of the pasta and the cheese sauce will degrade upon thawing. The sauce may separate. This dish is best fresh.
How long do leftovers last in the refrigerator?
Store in an airtight container in the refrigerator for up to 4 days. Reheat in the microwave or in a 350°F oven until warmed through.
Why is my mac and cheese dry?
You did not use enough milk, or your dish was too shallow. Add 1/4 cup more milk next time. Use a deeper baking dish.
Why is my mac and cheese watery?
You used low-fat milk or did not let it rest before serving. Use whole milk. Let the dish rest for a full 10 minutes before serving.
Can I add an egg to make it richer?
Yes. Beat 1 large egg in a small bowl. Whisk in a little of the milk mixture to temper the egg. Stir the egg mixture into the dish before baking. The egg adds richness and helps the sauce set.
The One-Pot Magic
There is something magical about a dish where the pasta cooks directly in the sauce. The starch released from the pasta thickens the liquid into a creamy, clinging sauce. The flavors meld together in the oven. The cheese melts into every crevice.
This kielbasa mac and cheese is a perfect example of that magic. The milk becomes a rich cheese sauce without any separate steps. The kielbasa infuses the whole dish with smoky, savory flavor. The sharp cheddar creates a golden, bubbly crust that begs to be cracked open with a spoon.
This is not a complicated recipe. It is a smart recipe. It is the kind of dinner you make when you want something satisfying but you do not want to spend all night in the kitchen.
Keep kielbasa in your fridge. Keep elbow macaroni in your pantry. Keep milk and cheese in your fridge. This recipe is the reason why.
Recipe Card
Prep Time: 10 minutes
Cook Time: 35 minutes covered, plus 15–20 minutes uncovered
Rest Time: 5–10 minutes
Total Time: Approximately 65 to 75 minutes
Yield: 6 servings