I stood in my kitchen, the aroma of sizzling sausage enveloping me like a warm hug. My Italian Sausage Penne Casserole was on the verge of becoming a beloved family favorite, and I could hardly wait to dive in. This dish is the ultimate comfort food—perfectly creamy, incredibly satisfying, and oh-so-easy to whip up! With its rich blend of savory Italian sausage, gooey mozzarella, and vibrant herbs, it’s a crowd-pleaser that begs to be shared. Plus, it’s ideal for busy weeknights or lazy weekends when you crave something hearty but don’t want to spend hours cooking. Ready to transform your dinner routine? Let’s get cooking!

Why is this casserole a must-try?
Easy Preparation: This Italian Sausage Penne Casserole is a breeze to make, perfect for busy weeknights when you want something filling without the fuss.
Flavor Explosion: The combination of Italian sausage, creamy mozzarella, and aromatic herbs guarantees a rich, savory experience in every bite.
Make-Ahead Marvel: You can prepare it in advance—simply assemble, refrigerate, and bake when you’re ready to enjoy.
Crowd-Pleaser: It’s an ideal dish for family gatherings or potlucks, ensuring there’s always a hearty helping for everyone.
Versatile Option: Feel free to customize with your choice of veggies or cheese blends, making it adaptable to various tastes—just like I do with my Parmesan Italian Sausage or Sausage Potato Soup!
Italian Sausage Penne Casserole Ingredients
• Here’s everything you need for a delicious Italian Sausage Penne Casserole!
For the Casserole
- Italian Sausage – Use mild or spicy for your desired flavor profile.
- Penne Pasta – This acts as the perfect base; substitute with gluten-free pasta if necessary.
- Mozzarella Cheese – Offers gooey deliciousness; ricotta or Parmesan can be used for a twist.
- Diced Tomatoes – Provides moisture and acidity; adjust seasoning based on whether they’re canned or fresh.
- Onions – Yellow onions bring savory depth; shallots can be a suitable substitute if needed.
- Garlic – Fresh garlic elevates the dish; jarred is an option when shortcuts are desirable.
For the Seasoning
- Spices (Basil, Oregano, Salt, Pepper) – Essential for flavor; add red pepper flakes for an extra kick if you’re feeling adventurous.
For Preparation
- Non-stick Spray – Grease your baking dish for easy serving and clean-up.
Now, with these ingredients on hand, let the cooking adventure begin! The Italian Sausage Penne Casserole is just a warm oven away from delighting your family.
Step‑by‑Step Instructions for Italian Sausage Penne Casserole
Step 1: Preheat the Oven and Prepare Baking Dish
Begin by preheating your oven to 350°F (175°C). While the oven warms up, take out a 3-quart casserole dish and generously coat it with non-stick spray. This will help ensure that your Italian Sausage Penne Casserole comes out easily after baking and to minimize cleanup later on.
Step 2: Cook the Italian Sausage
In a large skillet over medium heat, add the Italian sausage and crumble it with a spatula. Cook for 7-10 minutes, or until the sausage is browned and no longer pink. Drain excess grease from the skillet, but reserve about 2 tablespoons to enhance the flavor of your casserole later on.
Step 3: Sauté Onions and Garlic
Next, add diced onions and minced garlic to the skillet with the reserved sausage grease. Sauté these aromatic ingredients for about 3-5 minutes, or until the onions become translucent and fragrant. This will create a savory base for your Italian Sausage Penne Casserole that elevates the overall flavor profile.
Step 4: Add Tomatoes and Spices
Pour in the diced tomatoes along with basil, oregano, salt, and pepper into the skillet. Stir everything together and cook for an additional 5 minutes, allowing the flavors to meld beautifully. You should notice the mixture bubbling slightly while the tomatoes release their juices, intensifying the taste of your casserole.
Step 5: Combine the Sausage Mixture and Simmer
Incorporate the browned sausage back into the skillet, bringing the mixture to a gentle boil. Once boiling, reduce the heat and let it simmer uncovered for about 20-30 minutes. During this time, the sauce will thicken and become richly flavored, creating a perfect blend for the pasta.
Step 6: Cook the Penne Pasta
While the sauce simmers, cook the penne pasta according to package instructions until it reaches an al dente texture, usually about 8-10 minutes. Once cooked, drain the pasta and rinse it briefly under cold water to stop the cooking process. This step will prevent the pasta from becoming mushy in your casserole.
Step 7: Combine Pasta and Sauce
In a large pot, combine the cooked penne pasta with the sausage mixture and half of the mozzarella cheese. Stir well over low heat for 2-3 minutes until the cheese starts to melt and envelop the pasta in creamy goodness. This will be the delicious filling of your Italian Sausage Penne Casserole.
Step 8: Layer the Casserole
Spoon half of the pasta and sausage mixture into the prepared casserole dish. Sprinkle with a layer of mozzarella cheese, then add the remaining mixture on top. Finish with a generous layer of mozzarella, allowing the melted cheese to create a gooey topping that everyone will love.
Step 9: Bake the Casserole
Cover the casserole dish tightly with aluminum foil and place it in the preheated oven. Bake for 30 minutes, letting the flavors meld together. If you prefer a golden, crispy cheese topping, carefully remove the foil in the last 5 minutes of baking to allow the cheese to brown wonderfully.
Step 10: Rest Before Serving
Once baked, carefully remove the casserole from the oven and allow it to rest for about 10 minutes before serving. This resting period will help the casserole set and make it easier to slice and serve. Your Italian Sausage Penne Casserole is now ready to be enjoyed!

What to Serve with Italian Sausage Penne Casserole
Enhance your dinner experience with delightful sides and drinks that beautifully complement the creamy texture and hearty flavors of this comforting casserole.
- Caesar Salad: Crisp romaine lettuce with a tangy dressing adds a refreshing crunch, balancing the richness of the casserole. Top with croutons for some added texture.
- Garlic Bread: This iconic pairing works wonders! The buttery, garlicky flavor of toasted bread makes it perfect for soaking up all that delicious sauce.
- Steamed Broccoli: Bright green florets bring a splash of color and nutrients, and their slight bitterness cuts through the richness of the dish for a more balanced meal.
- Roasted Vegetables: A medley of seasonal veggies such as bell peppers, zucchini, and carrots caramelizes beautifully in the oven, adding herbal notes and sweetness.
- Red Wine: A glass of Chianti or any full-bodied red wine enhances the flavors of the sausage, providing a lovely warmth that complements the dish’s heartiness.
- Tiramisu: Finish on a sweet note! This classic Italian dessert offers a creamy coffee-infused indulgence that will leave your guests sighing with delight.
Whether you’re hosting a family gathering or just enjoying a cozy meal, these pairings will elevate the Italian Sausage Penne Casserole to new heights of flavor and enjoyment!
Italian Sausage Penne Casserole Variations
Feel free to explore new twists and alternatives that will make this casserole your own and deepen its delicious allure!
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Turkey Swap: Replace Italian sausage with ground turkey or chicken for a lighter but equally tasty option. It keeps the heartiness without losing flavor!
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Veggie Boost: Add fresh spinach or bell peppers to the sauce for an added nutritional punch. This not only elevates the dish but also adds pops of color!
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Cheesy Delight: Try using a mix of cheeses like ricotta and Parmesan for a richer depth, creating a creamy and savory layer with every bite.
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Spicy Kick: If you’re craving some heat, mix in red pepper flakes or diced jalapeños when sautéing the onions and garlic. The result is a delightful warmth that everyone can enjoy!
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Gluten-Free: Swap out the penne pasta for gluten-free options without compromising on taste or texture! There are plenty of fantastic gluten-free pastas available today.
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Creamy Addition: Stir in a little heavy cream or sour cream to the sausage mixture for an ultra-rich sauce. The creaminess can elevate your dish from familiar to extraordinary!
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Herb Infusion: Experiment with fresh herbs like thyme or parsley for a fragrant twist that brightens up the rich sauce. The aroma fills your kitchen with warmth!
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Smoky Flavor: Incorporate smoked paprika into the seasoning for a subtle smokiness that perfectly complements the Italian flavors. It’s a little change that can make a big difference!
If you’re looking for more inspiration, consider whipping up a comforting Bacon Cheeseburger Casserole or try the cozy flavors in Autumn Tortellini Soup with Sausage, both are deliciously delightful options!
Expert Tips for Italian Sausage Penne Casserole
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Ingredient Quality: Use high-quality Italian sausage for the best flavor, and don’t skimp on the cheese; fresh mozzarella will make a significant difference.
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Pasta Perfect: Avoid overcooking the penne; it should be al dente before combining. This prevents mushiness in the final dish as it will cook further in the oven.
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Flavor Adjustments: Taste your sauce during simmering! Adjust the seasoning as needed—don’t hesitate to add more salt, pepper, or herbs to suit your palate.
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Resting Period: Allow the casserole to rest for about 10 minutes before serving. This engages all the flavors and makes sure it holds together for cleaner servings.
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Make-Ahead: If you’re preparing ahead, assemble the casserole and cover it tightly. Refrigerate for up to 24 hours, then bake it straight from the fridge, adding extra baking time as needed.
How to Store and Freeze Italian Sausage Penne Casserole
Fridge: Store leftovers in an airtight container in the refrigerator for up to 3-4 days. Make sure to let it cool before sealing to prevent moisture buildup.
Freezer: This casserole freezes beautifully! Wrap it tightly in plastic wrap or aluminum foil, then place in an airtight container for up to 2-3 months.
Reheating: To reheat, thaw overnight in the fridge if frozen. You can warm it in the oven at 350°F (175°C) for about 20-30 minutes or until heated through, ensuring it maintains its creamy texture.
Make-Ahead Tip: You can also prepare the Italian Sausage Penne Casserole ahead of time, refrigerate it uncooked, and bake it right before serving for fresh, delicious comfort food!
Make Ahead Options
These Italian Sausage Penne Casserole components are perfect for meal prep enthusiasts! You can assemble the entire casserole and refrigerate it for up to 24 hours before baking—this will not only save you time on a busy weeknight but also enhance the flavors as they meld together. To prepare ahead, simply follow the instructions until you layer your casserole in the dish, cover tightly with foil, and chill. When you’re ready to serve, just pop it in the preheated oven for about 30-40 minutes (adjust the time if coming straight from the fridge) until it’s bubbly and the cheese is golden. With these make-ahead options, you’ll have restaurant-quality results with minimal effort!

Italian Sausage Penne Casserole Recipe FAQs
How do I select the best Italian sausage for this recipe?
Absolutely! When choosing Italian sausage, look for high-quality brands that list pork as the first ingredient. If you prefer a little kick, opt for spicy sausage; for a milder taste, go with the sweet variant. Sometimes, market stands or butchers may also offer fresh-made sausages for a more authentic flavor.
How can I store leftovers of the Italian Sausage Penne Casserole?
Very simple! Store any leftovers in an airtight container in the refrigerator for up to 3-4 days. Be sure to let the casserole cool completely before sealing it; this helps prevent condensation, which can lead to sogginess upon reheating.
Can I freeze the casserole?
Yes! This dish freezes excellently. To freeze, first let the casserole cool down, then wrap it tightly in plastic wrap or aluminum foil. Place it in an airtight container or heavy-duty freezer bag. It can be kept frozen for 2-3 months. When you’re ready to enjoy it, thaw it overnight in the fridge before reheating, or you can bake straight from the freezer, adjusting the time accordingly.
What if the casserole comes out too dry?
If your casserole ends up a bit dry, no worries! You can add a splash of chicken or vegetable broth to the leftovers before reheating. Also, consider covering the dish with foil while reheating to trap in moisture, creating a steamy environment that helps revive the casserole’s creamy texture.
Are there any dietary considerations I should keep in mind?
Very important! If you have dietary restrictions or allergies, you can easily customize this Italian Sausage Penne Casserole. For gluten-free options, substitute the penne pasta with gluten-free pasta. Additionally, consider using turkey or chicken sausage for a lighter option. If you’re cooking for pets, remember that certain herbs and ingredients can be harmful; always keep their meals separate.
Can I prepare this casserole ahead of time?
Absolutely! You can assemble the Italian Sausage Penne Casserole a day in advance without baking it. Just cover it tightly and store it in the fridge. When you’re ready to serve, pop it in the oven straight from the refrigerator, adding a few extra minutes to the baking time to ensure it’s heated through. This is a fantastic way to save time while still enjoying a homemade meal!

Italian Sausage Penne Casserole: Family Comfort in Every Bite
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C) and coat a 3-quart casserole dish with non-stick spray.
- In a large skillet over medium heat, cook the Italian sausage for 7-10 minutes until browned. Drain excess grease, reserving about 2 tablespoons.
- Add diced onions and minced garlic to the skillet with the reserved grease and sauté for 3-5 minutes.
- Pour in the diced tomatoes, basil, oregano, salt, and pepper, cooking for an additional 5 minutes.
- Incorporate the browned sausage back into the skillet, bring to a gentle boil, then reduce heat and let it simmer for 20-30 minutes.
- While the sauce simmers, cook the penne pasta according to package instructions until al dente, about 8-10 minutes.
- Combine the cooked pasta with the sausage mixture and half of the mozzarella cheese, stirring over low heat for 2-3 minutes.
- Layer half of the pasta mixture in the prepared dish, sprinkle with a layer of mozzarella cheese, then add the remaining mixture and top with more mozzarella.
- Cover with aluminum foil and bake for 30 minutes. Remove the foil in the last 5 minutes for a crispy topping.
- Allow the casserole to rest for 10 minutes before serving.

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