The aroma of garlic sizzling in butter can instantly transport me to my favorite Italian kitchen, where every meal feels like a loving embrace. Today, I'm sharing a delightful recipe for Garlic Butter Spaghetti with Cheesy Italian Sausage and Spinach that perfectly captures that warmth. This dish not only comes together in just 35 minutes, making it a fantastic weeknight option, but it also strikes the perfect balance of rich flavors and wholesome goodness. With a medley of savory sausage, fresh spinach, and melty mozzarella, it's bound to be a hit with family and friends. Ready to make your taste buds dance? Join me as we whip up this comforting and satisfying meal!

Why is this spaghetti recipe a must-try?
Simplicity at its Best: This quick dish takes just 35 minutes from start to finish, making it ideal for busy weeknights.
Rich, Comforting Flavors: The savory blend of cheesy sausage and garlic butter creates a cozy, indulgent taste that satisfies every craving.
Nutritious Twist: Packed with fresh spinach, this recipe proves that comfort food can be healthy too!
Crowd-Pleasing Appeal: Whether it's a family dinner or a gathering with friends, this dish is sure to impress and leave everyone asking for seconds.
Make it Your Own: Feel free to substitute ingredients based on your preference, making it a versatile staple in your recipe collection.
Garlic Butter Spaghetti with Cheesy Italian Sausage Ingredients
• Dive into the delightful world of Garlic Butter Spaghetti with Cheesy Italian Sausage and Spinach!
For the Spaghetti
• 12 oz spaghetti – Choose whole grain for a healthier option!
For the Sausage
• 1 lb Italian sausage – Opt for spicy or mild, depending on your taste.
For the Spinach and Flavor
• 4 cups fresh spinach – Fresh spinach adds vibrant color and nutrients!
• 6 cloves garlic – The star ingredient that brings an irresistible aroma.
• ½ teaspoon crushed red pepper flakes – Adjust to your spice preference for added warmth.
• 1 teaspoon Italian seasoning – Enhances the rich flavors with a herbal touch.
For the Cheese
• 1 ½ cups shredded mozzarella cheese – Go for low-fat if you're looking to cut calories!
• Grated Parmesan (optional) – A sprinkle of this brings a delightful finishing touch.
For the Sauce and Seasoning
• ¾ cup marinara sauce – Homemade or store-bought for an easy addition.
• Salt and black pepper – Season to taste, elevating the flavors even more.
• Fresh parsley, chopped (optional) – Adds a touch of freshness and color for serving.
For the Cooking
• 4 tablespoons unsalted butter – Rich, creamy goodness is essential for the garlic butter sauce!
Now that you have everything ready, let's get cooking!
Step‑by‑Step Instructions for Garlic Butter Spaghetti with Cheesy Italian Sausage and Spinach
Step 1: Cook the Spaghetti
Bring a large pot of salted water to a rolling boil over high heat. Once boiling, carefully add the 12 oz of spaghetti and cook until al dente, about 8–10 minutes, stirring occasionally. Reserve ½ cup of the pasta water, then drain the spaghetti and set it aside in a large bowl, allowing it to cool slightly.
Step 2: Brown the Sausage
In a large skillet, heat the stove to medium and add the 1 lb of Italian sausage, breaking it up into crumbles with a spatula. Sauté for 6–8 minutes or until the sausage is browned and fully cooked. Look for a nice golden color as it cooks to ensure maximum flavor in your Garlic Butter Spaghetti.
Step 3: Make the Garlic Butter
Push the cooked sausage to one side of the skillet, creating some space. Add 4 tablespoons of unsalted butter to the other side and let it melt for about 1 minute. Once melted, stir in 6 cloves of minced garlic and ½ teaspoon of crushed red pepper flakes. Cook for 30 seconds until you can smell the fragrant garlic wafting through your kitchen.
Step 4: Add Spinach and Seasoning
Now, combine the sausage with the garlic butter by stirring everything together. Toss in the 4 cups of roughly chopped fresh spinach and cook for about 2–3 minutes, or until the spinach is wilted and bright green. Season generously with 1 teaspoon of Italian seasoning, salt, and black pepper to taste, enhancing the flavors of your Garlic Butter Spaghetti.
Step 5: Combine the Pasta and Sauce
Next, add your cooked spaghetti back into the skillet and pour in ¾ cup of marinara sauce along with a few tablespoons of the reserved pasta water. Toss everything together for 2–3 minutes until the spaghetti is well coated in the sauce, mixing in all those delicious juices from the sausage and vegetables.
Step 6: Melt the Cheese
Sprinkle 1 ½ cups of shredded mozzarella cheese evenly over the pasta mixture. Cover the skillet with a lid and let it sit for about 3–5 minutes on low heat to gently melt the cheese. Alternatively, for a bubbly finish, broil it for 2–3 minutes in the oven until golden and crispy.
Step 7: Garnish and Serve
Finally, remove the skillet from heat and garnish your Garlic Butter Spaghetti with chopped parsley and a sprinkling of grated Parmesan if desired. Serve this comforting dish warm, ensuring everyone gets a taste of the cheesy, savory goodness packed within.

Garlic Butter Spaghetti with Cheesy Italian Sausage Variations
Feel free to let your creativity shine with these delightful twists on this comforting recipe!
- Gluten-Free: Substitute spaghetti with gluten-free pasta for a tasty, inclusive meal option.
- Vegetarian Delight: Replace Italian sausage with sautéed mushrooms or plant-based sausage for a fresh, hearty texture.
- Extra Veggie Boost: Add bell peppers, zucchini, or broccoli with the spinach to increase nutrition and create a colorful dish.
- Lemon Zest: A splash of fresh lemon juice or zest elevates the dish's brightness and adds a refreshing twist.
- Creamy Addition: For a rich sauce, stir in a bit of cream or cream cheese just before serving. This adds a luscious texture.
- Garlic Infusion: Roast garlic cloves and mash them into the sauce for an even deeper garlic flavor that's sweet and caramelized.
- Spicy Kick: Toss in additional crushed red pepper flakes, or add diced jalapeños for an extra zesty boost!
- Cheese Variations: Try mixing different cheeses, such as cheddar or gouda, to create unique flavor profiles that complement the dish beautifully.
Let your taste buds guide you as you explore these variations! Each one is sure to bring something special for family dinners or gatherings with friends. Enjoy creating your perfect bowl of Garlic Butter Spaghetti!
Expert Tips for Garlic Butter Spaghetti
Cooking Time Matters: Ensure your spaghetti is cooked to al dente; overcooked pasta can lead to a mushy texture in your Garlic Butter Spaghetti.
Sausage Selection: Choose high-quality Italian sausage for the best flavor. Don't skip breaking it apart; even pieces ensure even cooking and better integration with the dish.
Garlic Precision: When adding minced garlic, avoid browning it too much. Cook just until fragrant to prevent a bitter taste—a common mistake!
Cheese Melting: For perfect melted mozzarella, use low heat and cover the skillet. A quick broil can give a delightful bubbly topping but watch closely!
Custom Seasoning: Feel free to adjust the crushed red pepper flakes based on your spice tolerance. It’s easy to start with less and add more!
Leftover Magic: If you have leftovers, add a splash of broth while reheating to revitalize the flavors, making your Garlic Butter Spaghetti taste fresh again.
How to Store and Freeze Garlic Butter Spaghetti
Fridge: Store leftover Garlic Butter Spaghetti in an airtight container for up to 3 days. This keeps the flavors fresh while ensuring it's easy to grab for a quick meal.
Freezer: For longer storage, freeze the spaghetti in a sealed container for up to 3 months. Allow it to cool completely before freezing to preserve texture.
Reheating: Thaw overnight in the fridge, then reheat on the stove over low heat, adding a splash of reserved pasta water or broth to restore creaminess.
Airtight Guidance: Always use airtight containers to prevent freezer burn, which can compromise the delicious flavors of your Garlic Butter Spaghetti.
Make Ahead Options
Garlic Butter Spaghetti with Cheesy Italian Sausage and Spinach is a fantastic meal prep option, perfect for busy weeknights! You can cook the spaghetti and prepare the sausage mixture (steps 1-4) up to 24 hours in advance. Simply cool and store them separately in airtight containers in the refrigerator. When you’re ready to enjoy, reheat the sausage mixture on the stovetop, add in the cooked spaghetti, marinara sauce, and reserved pasta water (step 5), then proceed with melting the cheese. This ensures the dish remains just as delicious, with vibrant flavors intact, making weeknight dinners feel effortless and satisfying!
What to Serve with Garlic Butter Spaghetti with Cheesy Italian Sausage and Spinach
A delightful meal isn't complete without the perfect sides to elevate every bite and ensure a satisfying experience.
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Garlic Bread: The crunchy, buttery perfection of garlic bread is a must-have companion that pairs perfectly with the creamy spaghetti sauce.
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Caesar Salad: Crisp romaine, tangy dressing, and parmesan croutons add a refreshing crunch that balances the richness of your main dish.
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Roasted Vegetables: Seasonal veggies roasted to perfection offer a burst of flavor and texture—think caramelized Brussels sprouts or sweet bell peppers.
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Pesto Caprese Skewers: Fresh mozzarella, juicy tomatoes, and fragrant basil drizzled with pesto create a bright, flavorful appetizer that will impress any guest.
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Zesty Lemonade: A glass of homemade lemonade, with its refreshing zing, complements the savory elements beautifully, cleansing the palate.
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Tiramisu: End your meal on a sweet note with this classic Italian dessert, as its coffee flavors and creamy layers provide a delightful contrast to your hearty main dish.
Elevating your dinner with these pairings transforms your Garlic Butter Spaghetti into a complete culinary experience!

Garlic Butter Spaghetti with Cheesy Italian Sausage and Spinach Recipe FAQs
What type of spaghetti should I use for this recipe?
Absolutely, you can use traditional spaghetti, but feel free to swap in whole grain or gluten-free pasta for a healthier or dietary-friendly option!
How do I know when my spinach is fresh?
Look for vibrant green leaves without any wilting or dark spots all over, which can indicate aging. Fresh spinach should feel crisp and firm!
Can I store Garlic Butter Spaghetti leftovers?
Yes, you can! Store leftover Garlic Butter Spaghetti in an airtight container in the fridge for up to 3 days. It’s a perfect quick meal to heat up during a busy week.
How do I freeze Garlic Butter Spaghetti?
To freeze Garlic Butter Spaghetti, allow it to cool completely first, then portion it into airtight freezer-safe containers. It can be stored for up to 3 months. When you're ready to enjoy it, thaw it overnight in the fridge and reheat on the stove, adding a splash of reserved pasta water to enhance the texture.
What should I do if my garlic burns while cooking?
If your garlic burns, it's best to start over with fresh garlic. Burnt garlic can add a bitter flavor that will affect your entire dish. Cook the minced garlic just until fragrant, roughly 30 seconds, to avoid this issue.
Is this recipe suitable for pets or those with allergies?
While the Garlic Butter Spaghetti is delicious for humans, keep in mind that ingredients like garlic and cheese can be harmful to pets. If you have allergies, check ingredient labels and consider substituting or omitting items as needed to fit your dietary restrictions.

Indulgent Garlic Butter Spaghetti with Cheesy Italian Sausage
Ingredients
Equipment
Method
- Bring a large pot of salted water to a boil. Add spaghetti and cook until al dente, about 8–10 minutes. Reserve ½ cup pasta water, drain and set aside.
- In a large skillet, heat to medium and add Italian sausage, breaking it into crumbles. Sauté for 6–8 minutes until browned.
- Push sausage to side of skillet. Add butter and let it melt. Stir in minced garlic and crushed red pepper flakes; cook until fragrant.
- Combine sausage with garlic butter. Add spinach and cook 2–3 minutes until wilted. Season with Italian seasoning, salt, and pepper.
- Add cooked spaghetti and marinara sauce to skillet; toss for 2–3 minutes until well coated.
- Sprinkle mozzarella cheese over pasta; cover and melt on low heat for 3–5 minutes, or broil for a bubbly finish.
- Garnish with chopped parsley and grated Parmesan. Serve warm.





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