Oven-Baked Sausage and Mushroom Pasta Gratin

 

There are pasta bakes—and then there’s this Oven-Baked Sausage and Mushroom Pasta Gratin. Creamy, cheesy, and bubbling hot from the oven, it’s the kind of comfort food that brings the whole family running to the table. Imagine perfectly cooked pasta coated in a luscious cream sauce, studded with savory Italian sausage and earthy mushrooms, then topped with a gooey blanket of melted mozzarella and a crispy sprinkle of Parmesan. Every bite delivers indulgence, warmth, and satisfaction.

This dish is not only flavor-packed and hearty, but it’s also a one-pan wonder—perfect for weeknight dinners, potlucks, or even entertaining guests. If you’re looking for a pasta recipe that is as impressive as it is easy to make, this gratin is your answer.

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Ingredients (and Why They Work)

Pasta (12 oz penne or rigatoni) – Holds up well to baking and captures the sauce in its ridges.

Italian sausage (1 lb, casing removed) – Adds depth, spice, and meaty richness. Mild or spicy works, depending on your preference.

Mushrooms (8 oz, sliced) – Bring a hearty, earthy flavor that balances the richness of the sausage and cream.

Olive oil (2 tbsp) – For sautéing, adds flavor and prevents sticking.

Onion (1 medium, finely chopped) – Builds a sweet, savory base for the sauce.

Garlic (3 cloves, minced) – Enhances flavor with aromatic depth.

Heavy cream (1 ½ cups) – Creates a velvety, rich sauce that coats every piece of pasta.

Chicken broth (1 cup) – Lightens the sauce while adding a savory backbone.

Mozzarella cheese (2 cups, shredded) – Melts beautifully for a gooey, stretchy topping.

Parmesan cheese (1 cup, grated) – Adds sharpness and a golden crust when baked.

Fresh parsley (2 tbsp, chopped) – Brightens the dish with a pop of freshness.

Salt and black pepper (to taste) – Essential for seasoning and balance.

Red pepper flakes (optional, ½ tsp) – For a little heat, if desired.

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Step-by-Step Instructions

1. Cook the pasta – Boil pasta in salted water until just al dente (it will finish cooking in the oven). Drain and set aside.

2. Prepare the sausage – In a large oven-safe skillet or Dutch oven, heat olive oil over medium-high heat. Add the sausage, breaking it apart as it cooks, until browned and no longer pink. Remove and set aside.

3. Sauté the vegetables – In the same pan, add onion and mushrooms. Cook until softened and golden brown. Stir in garlic and cook for 1 minute until fragrant.

4. Make the sauce – Pour in chicken broth and heavy cream, scraping up any browned bits from the pan. Bring to a gentle simmer and season with salt, pepper, and optional red pepper flakes.

5. Combine everything – Return the sausage to the pan, then add the cooked pasta. Stir to coat everything evenly in the sauce.

6. Add the cheese topping – Sprinkle mozzarella and Parmesan generously over the top.

7. Bake – Transfer the skillet to a preheated oven at 375°F (190°C) and bake uncovered for 20–25 minutes, until the cheese is melted, bubbly, and golden.

8. Finish and serve – Garnish with fresh parsley and let rest for 5 minutes before serving.

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Why This Recipe is Loved

One-pan convenience – Cook, assemble, and bake in the same dish.

Family-friendly flavors – Creamy, cheesy, and savory with just the right amount of richness.

Customizable – Swap in spinach, bell peppers, or different cheeses for your own twist.

Crowd-pleasing – Perfect for gatherings, this dish serves generously and reheats beautifully.

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Pro Tips for Success

Don’t overcook the pasta – Slightly undercooked pasta prevents mushiness after baking.

Use freshly grated cheese – Pre-shredded cheese contains anti-caking agents that prevent smooth melting.

Brown the mushrooms well – This develops a deeper, richer flavor.

Rest before serving – Allowing the gratin to sit ensures the sauce thickens and flavors meld.

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Serving Suggestions

Pair this sausage and mushroom pasta gratin with:

A crisp green salad dressed with lemon vinaigrette.

Warm garlic bread or crusty baguette.

A glass of red wine like Chianti or Merlot for the ultimate Italian-inspired dinner.

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Conclusion

This Oven-Baked Sausage and Mushroom Pasta Gratin is the ultimate definition of comfort food: creamy, cheesy, and incredibly satisfying. With simple ingredients, minimal prep, and big flavors, it’s a recipe that feels gourmet yet is 

easy enough for busy weeknights. Make it once, and it’s guaranteed to earn a permanent spot in your dinner rotation.