Name: Easy Italian Beef Sausage Baked Mostaccioli with Spinach
Prep time: 15 min
Cook time: 45 min
Total time: 1 h
Cuisine: Italian
Ingredients: 1 pound beef Italian sausage (mild or hot); 12 ounces mostaccioli pasta; 4 cups fresh spinach; 3 cups marinara sauce; 2 cups shredded low-moisture mozzarella cheese; 1 cup ricotta cheese; 1 cup freshly grated Parmesan cheese or Pecorino Romano; 1 yellow onion, finely diced; 3 cloves garlic, minced; 1 tablespoon olive oil; 1 tablespoon dried Italian seasoning; 1/2 teaspoon red pepper flakes; Salt to taste; Freshly ground black pepper to taste; 1/2 cup non-alcoholic red cooking beverage or beef broth (optional)

Italian Sausage Baked Mostaccioli With Spinach

Oh my goodness, where do I even begin with this absolute masterpiece? This isn’t just another pasta dish; it’s a warm, comforting hug in a baking dish, and I promise you, this Italian Sausage Baked Mostaccioli With Spinach is going to become a staple in your kitchen. What makes it so special, you ask? It’s the perfect symphony of savory beef Italian sausage, tender mostaccioli pasta, vibrant spinach, and a rich, deeply flavorful tomato sauce, all crowned with a golden, bubbly layer of melted cheese. It’s hearty, satisfying, and honestly, just pure joy to eat. If you’re looking for a dish that brings everyone to the table with a smile, this is it.

I created this Italian Sausage Baked Mostaccioli With Spinach with both incredible flavor and ease in mind. Imagine perfectly cooked mostaccioli pasta tossed in a robust sauce bursting with seasoned beef Italian sausage and fresh, wilted spinach, then lovingly baked until the cheeses are gloriously melted, bubbly, and slightly browned on top. It’s a complete meal that feels wonderfully indulgent but comes together without too much fuss, making it perfect for a cozy weeknight or feeding a crowd. Trust me, your taste buds (and your family!) will thank you for making this incredibly delicious and comforting bake.

Ingredient Notes

I’ll begin by discussing the core components that make our Italian Sausage Baked Mostaccioli with Spinach so incredibly satisfying.

Beef Italian Sausage: Since we’re opting for a beef-based sausage, you’ll want to look for either mild or hot beef Italian sausage. I personally love the subtle kick of hot Italian sausage, but mild is perfect if you prefer a less spicy dish. The key here is good quality; it’s the star protein and infuses the dish with so much flavor. Make sure to brown it well and crumble it finely as it cooks.

Mostaccioli Pasta: This wonderful tube-shaped pasta is ideal for baked dishes like ours because its hollow interior is fantastic for catching and holding onto that rich sauce and cheesy goodness. If you can’t find mostaccioli, don’t worry! Penne or ziti are excellent substitutions, offering a similar shape and texture that works beautifully in this recipe. Remember to cook it al dente – a little firm – since it will continue to cook in the oven.

Fresh Spinach: The addition of fresh spinach not only adds a vibrant color and essential nutrients but also a lovely earthiness that balances the richness of the sausage and cheese. I prefer fresh spinach for its texture and bright flavor, but if you’re using frozen, just be sure to thaw it thoroughly and squeeze out every last drop of excess water before adding it to your sauce. This prevents your mostaccioli from becoming watery.

Marinara Sauce: A good quality marinara sauce is non-negotiable for this dish. You can certainly use your favorite homemade recipe if you have one on hand, but a high-quality store-bought brand works wonderfully too. Look for one with a robust tomato flavor and minimal added sugars. It forms the flavorful base that brings all our ingredients together.

Cheeses: We’re using a trio of cheeses to achieve that perfect gooey, creamy, and savory profile.

Mozzarella: Shredded low-moisture mozzarella is essential for that classic melty, stretchy texture we all love in a baked pasta dish. I often buy a block and shred it myself; it melts smoother and tastes fresher.
Ricotta: Creamy ricotta cheese adds a wonderful richness and creates pockets of lusciousness throughout the mostaccioli. It lightens the texture and adds a delightful tang.
Parmesan (or Pecorino Romano): Freshly grated Parmesan or Pecorino Romano adds a salty, nutty depth of flavor that enhances all the other ingredients. Don’t skip the fresh grate if you can – it makes a huge difference!

Aromatics and Seasonings: Don’t underestimate the power of finely diced yellow onion and minced garlic. They lay the aromatic foundation for our sauce. For seasonings, I rely on dried Italian seasoning, a touch of red pepper flakes for a subtle warmth, and, of course, salt and freshly ground black pepper to taste. A splash of a non-alcoholic red cooking beverage or beef broth can also add a layer of depth to the sauce, mimicking the complexity of traditional wine without the alcohol.

Step-by-Step Instructions

Let’s get cooking! This is how I bring together all those delicious ingredients to create our Italian Sausage Baked Mostaccioli with Spinach.

1. Prepare Your Pasta and Oven: First things first, get a large pot of salted water boiling for your mostaccioli. Cook the pasta according to package directions until it’s al dente – meaning it’s still a little firm to the bite. Remember, it will finish cooking in the oven, so don’t overcook it now! Drain the pasta and set it aside. While your pasta cooks, preheat your oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish.

2. Brown the Beef Italian Sausage: In a large skillet or Dutch oven, heat a tablespoon of olive oil over medium-high heat. Add your beef Italian sausage, breaking it up with a spoon as it cooks. Brown the sausage until it’s fully cooked through and no longer pink. Drain off any excess fat from the skillet. This step is crucial for building a flavorful base.

3. Sauté Aromatics and Wilt Spinach: Reduce the heat to medium. Add the diced onion to the skillet with the cooked sausage and sauté until it softens, about 5 minutes. Then, stir in the minced garlic and cook for another minute until fragrant, being careful not to burn the garlic. Next, add the fresh spinach, a handful at a time if needed, and cook until it’s completely wilted. If using frozen spinach, add it here after squeezing out all the water, and cook until heated through.

4. Build the Sauce: Pour in your marinara sauce, the non-alcoholic red cooking beverage or beef broth (if using), Italian seasoning, and red pepper flakes. Stir everything together and bring the sauce to a gentle simmer. Season with salt and freshly ground black pepper to taste. Let it simmer for about 5-7 minutes to allow the flavors to meld beautifully. If you feel the sauce is too thick, a splash of pasta water can thin it slightly.

5. Combine and Layer: In a large mixing bowl, combine the drained mostaccioli pasta, the sausage and spinach sauce mixture, half of the shredded mozzarella, and half of the grated Parmesan cheese. Stir gently until everything is well coated. Now, spread about a cup of the marinara sauce (reserve this from your main batch if you want a saucier base, or just pull from the skillet) on the bottom of your prepared baking dish. Spoon about half of the pasta mixture over the sauce in the dish. Dollop spoonfuls of ricotta cheese over this layer. Repeat with the remaining pasta mixture, ensuring an even spread.

6. Top and Bake: Sprinkle the remaining shredded mozzarella and Parmesan cheese generously over the top of the mostaccioli. Cover the baking dish tightly with aluminum foil. Bake for 25 minutes. Then, remove the foil and continue baking for another 15-20 minutes, or until the cheese is bubbly and lightly golden brown. If you like a darker, crispier cheese topping, you can pop it under the broiler for a minute or two – but watch it carefully!

7. Rest and Serve: Once out of the oven, let your Italian Sausage Baked Mostaccioli with Spinach rest for about 10-15 minutes before serving. This allows the pasta to absorb more sauce and prevents it from falling apart when you scoop it. Trust me, this resting period is crucial for the perfect texture!

Tips & Suggestions

To make your Italian Sausage Baked Mostaccioli with Spinach even more spectacular, I have a few tips and tricks up my sleeve!

Don’t Overcook Your Pasta: This is probably my most important tip for any baked pasta dish. Cook the mostaccioli just to al dente (a little firm) because it will continue to cook in the hot sauce and oven. Overcooked pasta will become mushy.
Boost Your Veggies: Feel free to add other vegetables to the mix! Sliced bell peppers (red, yellow, or orange), mushrooms, or even finely diced zucchini would be fantastic additions. Sauté them with the onion and sausage to soften before adding the sauce.
Flavor Deepening: For an even richer, deeper flavor in your sauce, try adding a tablespoon of tomato paste to the pan with the onions and garlic, cooking it for a minute or two before adding the marinara. This concentrates the tomato flavor beautifully.
Make Ahead Magic: This dish is a fantastic make-ahead option! You can assemble the entire mostaccioli bake a day in advance. Just cover it tightly with foil and refrigerate. When you’re ready to bake, let it sit at room temperature for about 30 minutes while your oven preheats, then bake as directed, potentially adding an extra 10-15 minutes to the covered baking time to ensure it heats through.
Serving Suggestions: I love serving this hearty mostaccioli with a simple green salad dressed with a vinaigrette to cut through the richness. Garlic bread or crusty Italian bread is also a must for soaking up every last bit of that delicious sauce!
Cheese, Please!: Experiment with other cheeses! A layer of provolone under the mozzarella can add an extra layer of sharp, savory flavor. A mix of Gruyere and Parmesan on top also offers a delightful crust and nutty notes.
Rest for Success: Seriously, don’t skip the resting step after baking. It allows the cheese and sauce to set, making for cleaner servings and ensuring every bite is perfectly moist and cohesive.

Storage

Our Italian Sausage Baked Mostaccioli with Spinach is not only delicious fresh from the oven but also makes for excellent leftovers!

Refrigeration: Any leftover mostaccioli should be transferred to an airtight container and stored in the refrigerator. It will keep beautifully for 3-4 days. This makes it perfect for meal prepping or enjoying throughout the week. When reheating, I often add a splash of extra marinara or beef broth to help keep it moist.

Freezing: This dish freezes exceptionally well, making it a fantastic candidate for future quick meals.

Individual Portions: If you have individual portions left, scoop them into freezer-safe containers.
Whole Dish (Baked): If you want to freeze the entire baked dish, let it cool completely first. You can either wrap the entire baking dish tightly with plastic wrap and then foil, or transfer it to a disposable aluminum baking pan for easier freezing and reheating.
Whole Dish (Unbaked): You can also assemble the entire dish up to the point of baking, cover it tightly with plastic wrap and foil, and freeze it. When ready to bake, thaw it in the refrigerator overnight, then bake as directed, possibly adding an extra 15-20 minutes to the covered baking time.

Frozen mostaccioli will maintain its quality for up to 2-3 months. Label your containers or foil-wrapped dishes with the date for easy tracking.

Reheating:

From Refrigerator: For individual portions, a microwave works well. For larger portions, cover with foil and reheat in an oven preheated to 350°F (175°C) until heated through, about 20-30 minutes. Remove foil for the last 5-10 minutes if you want the cheese to re-crisp.
From Freezer (Thawed): If thawed overnight in the fridge, reheat as you would from the refrigerator.
From Freezer (Frozen): You can bake the frozen, unbaked casserole directly from the freezer. Remove the plastic wrap, cover tightly with foil, and bake at 375°F (190°C) for about 1 hour and 15 minutes to 1 hour and 30 minutes, then remove the foil and bake for an additional 20-30 minutes until bubbly and heated through. For already baked and frozen portions, it’s best to thaw first for even reheating, or reheat individual portions in the microwave on a lower power setting for longer.

Always ensure the internal temperature reaches a safe 165°F (74°C) when reheating.

Final Thoughts

And there you have it! My absolute favorite, Italian Sausage Baked Mostaccioli With Spinach. I truly believe this dish is a must-try for anyone seeking a comforting, incredibly flavorful, and satisfying meal. The beauty of this Italian Sausage Baked Mostaccioli With Spinach lies in the perfect harmony of textures and tastes: the robust, savory beef Italian sausage, the perfectly al dente mostaccioli, and the vibrant freshness of the spinach, all lovingly enveloped in a rich sauce and topped with bubbling, golden cheese. It’s a complete meal that feels both special and wonderfully homey.

Whether you’re gathering family around the table, hosting friends, or simply craving a hearty meal that warms you from the inside out, this Italian Sausage Baked Mostaccioli With Spinach delivers every time. It’s a dish that promises to become a cherished part of your recipe collection, bringing smiles and full bellies with every delicious bite. Give it a try – I promise you won’t be disappointed!