If you are searching for a comforting, satisfying dish that will brighten up your dinner routine, look no further than this Simple Spaghetti Squash Chicken Parmesan Bake Recipe. Combining the tender, naturally sweet spaghetti squash strands with juicy, seasoned chicken breast and rich, melty cheese, this bake is a delicious twist on a classic favorite. It’s packed with flavor, lighter than traditional pasta bakes, and just the right balance of cheesy goodness and wholesome vegetables that makes it feel both indulgent and nourishing. Trust me, once you try this recipe, it’s going to be a regular at your table.

Ingredients You’ll Need
This recipe uses simple but essential ingredients that come together beautifully to provide layers of flavor, texture, and color. Each component plays a crucial role, from the spaghetti squash’s subtle sweetness to the savory seasoning on the chicken and the bubbling blanket of cheese on top.
- 1 medium Spaghetti Squash: The base of the dish with its unique shredded texture that mimics pasta in a healthy way.
- 1.5 pounds Boneless, Skinless Chicken Breast: Adds a hearty source of protein and soaks up all the flavors beautifully.
- 2 cups Marinara Sauce: Provides vibrant tomato flavor and moisture.
- 1.5 cups Shredded Mozzarella Cheese: Melts perfectly to create that irresistible cheesy topping.
- 0.5 cup Grated Parmesan Cheese: Offers a sharp, nutty edge that elevates every bite.
- 1 tablespoon Italian Seasoning: A medley of herbs that deeply enhances the flavor of the chicken and bake.
- 2 tablespoons Olive Oil: Used for roasting the squash and cooking the chicken for golden goodness.
- Salt and Pepper to taste: Necessary seasoning to bring out the full flavors.
- Optional Fresh Basil: Adds brightness and a fresh finish when sprinkled on top before serving.
How to Make Simple Spaghetti Squash Chicken Parmesan Bake Recipe
Step 1: Prepare and Roast the Spaghetti Squash
Preheat your oven to 400°F (200°C). Slice the spaghetti squash in half lengthwise and scoop out the seeds. Drizzle the cut sides generously with olive oil and season them with salt and pepper. Placing the squash cut-side down on a baking sheet, roast for 30 to 40 minutes until the flesh is easily pierced with a fork and can be shredded into strands. This roasting step transforms the squash from firm to tender, creating the perfect noodle substitute for this recipe.
Step 2: Cook the Seasoned Chicken
While the squash roasts, season your boneless, skinless chicken breasts with salt, pepper, and Italian seasoning. Heat olive oil in a skillet over medium-high heat, then cook the chicken until it becomes golden brown and is cooked through—about 6 to 7 minutes per side, depending on thickness. This step infuses the chicken with delicious herbs and creates a nice crust that adds texture to your bake.
Step 3: Combine and Assemble
After the squash has roasted and cooled slightly, flip it over and use a fork to scrape the flesh into spaghetti-like strands. In a large mixing bowl, toss the cooked chicken (sliced or shredded) with the squash strands and marinara sauce until everything is well combined. This mixture is the heart of your Simple Spaghetti Squash Chicken Parmesan Bake Recipe, merging savory chicken and veggie goodness with tangy tomato sauce.
Step 4: Bake with Cheese
Transfer the combined squash, chicken, and sauce mixture to a greased baking dish. Spread an even layer, then top it with shredded mozzarella and grated Parmesan cheese. Bake in the oven for an additional 15 to 20 minutes, or until the cheese is melted, bubbly, and lightly golden on top. This creates that irresistible cheesy crust everyone loves in a Parmesan bake.
Step 5: Serve Warm and Garnish
Allow the bake to cool for a few minutes before serving. Garnish with fresh basil leaves if you want a pop of color and a touch of brightness to complement the savory richness.
How to Serve Simple Spaghetti Squash Chicken Parmesan Bake Recipe

Garnishes
Fresh basil is a fantastic, aromatic garnish that complements the tomato and cheese flavors perfectly. You can also add a sprinkle of extra Parmesan or a dash of cracked black pepper to finish the dish with an elegant touch.
Side Dishes
This bake pairs wonderfully with a crisp green salad dressed in a light vinaigrette to add freshness and crunch. Garlic bread or even roasted vegetables can round out the meal, making it balanced and complete without overshadowing the main star of the dish.
Creative Ways to Present
For a more interactive presentation, serve the bake directly from the casserole dish at the table, allowing everyone to help themselves. Alternatively, you can scoop individual portions onto plates and drizzle a little extra marinara sauce or sprinkle some fresh herbs to make it look restaurant-quality in your own home.
Make Ahead and Storage
Storing Leftovers
Once cooled, store any leftovers in an airtight container in the refrigerator for up to 3 days. The flavors actually deepen overnight, making for an even tastier next-day meal.
Freezing
You can freeze leftovers by placing the cooled bake in a freezer-safe container. It will keep well for up to 2 months. Just make sure to thaw it in the refrigerator overnight before reheating for best results.
Reheating
Reheat leftovers in the oven at 350°F (175°C) until warmed through, about 15-20 minutes, which will also help maintain the bake’s texture and remelt the cheeses nicely. You can also microwave portions for quicker reheating but the oven method preserves the dish best.
FAQs
Can I use other types of squash instead of spaghetti squash?
Spaghetti squash’s unique stringy texture makes it ideal for this bake, but if you can’t find it, shredded zucchini or shaved cauliflower can be a good alternative, though the texture and flavor will differ slightly.
Is it necessary to cook the chicken before baking?
Yes, cooking the chicken first ensures it’s fully cooked and browned, which adds extra flavor and texture that enhances the overall dish.
Can I make this recipe vegetarian?
Absolutely! Simply omit the chicken and consider adding more vegetables or plant-based protein alternatives like cooked mushrooms, eggplant, or a meat substitute to maintain heartiness.
What kind of marinara sauce works best?
Any good-quality marinara sauce works well, whether store-bought or homemade. Choose one with robust, fresh tomato flavor and herbs to complement the chicken and squash.
How do I know when the spaghetti squash is done roasting?
It’s done when the flesh easily pulls away from the skin with a fork and is tender but not mushy—usually between 30 to 40 minutes depending on the squash size.
Final Thoughts
This Simple Spaghetti Squash Chicken Parmesan Bake Recipe is truly one of those meals that makes comfort food feel a little lighter and a lot healthier without sacrificing any flavor. It’s easy to prepare, deliciously cheesy, and perfect for family dinners or even meal prep. Give it a try and watch it quickly become a favorite weeknight go-to because who doesn’t want a recipe that’s both simple and endlessly satisfying?
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Simple Spaghetti Squash Chicken Parmesan Bake Recipe
- Prep Time: 15 minutes
- Cook Time: 40 minutes roasting + 15 minutes baking (55 minutes total)
- Total Time: 70 minutes
- Yield: 4 servings
- Category: Casserole
- Method: Baking
- Cuisine: Italian-American
- Diet: Low Carb
Description
This Simple Spaghetti Squash Chicken Parmesan Bake is a delicious, low-carb twist on the classic chicken parmesan. Roasted spaghetti squash strands are combined with seasoned chicken and marinara sauce, then baked with melted mozzarella and Parmesan cheese for a comforting, flavorful meal that’s perfect for weeknight dinners.
Ingredients
Vegetables
- 1 medium Spaghetti Squash (Typically weighs between 3 to 5 pounds)
Protein
- 1.5 pounds Boneless, Skinless Chicken Breast
Cheese
- 1.5 cups Shredded Mozzarella Cheese
- 0.5 cup Grated Parmesan Cheese
Pantry Items
- 2 cups Marinara Sauce (Store-bought or homemade)
- 1 tablespoon Italian Seasoning
- 2 tablespoons Olive Oil
- Salt and Pepper to taste
Optional
- Fresh Basil for garnish
Instructions
- Preheat Oven: Preheat your oven to 400°F (200°C) to prepare for roasting the spaghetti squash.
- Prepare Spaghetti Squash: Slice the spaghetti squash in half lengthwise and scoop out the seeds. Drizzle the cut sides with olive oil and season with salt and pepper evenly.
- Roast Squash: Place the squash halves cut-side down on a baking sheet and roast in the oven for 30 to 40 minutes, or until the flesh is fork-tender.
- Cook Chicken: While the squash is roasting, season the chicken breasts with salt, pepper, and Italian seasoning. Heat olive oil in a skillet over medium heat and cook the chicken until golden brown and cooked through, about 6-7 minutes per side depending on thickness.
- Combine Ingredients: When the spaghetti squash is done, flip the halves over and use a fork to scrape the flesh into strands. In a mixing bowl, combine the spaghetti squash strands, sliced cooked chicken, and marinara sauce. Mix well to combine.
- Bake the Casserole: Transfer the mixture into a greased baking dish. Evenly sprinkle the shredded mozzarella and grated Parmesan cheese over the top. Bake in the oven for an additional 15 to 20 minutes, or until the cheese is melted, bubbly, and golden.
- Garnish and Serve: Allow the dish to cool for a few minutes after baking. Garnish with fresh basil if desired and serve warm for a comforting meal.
Notes
- For a vegetarian version, omit the chicken and add sautéed mushrooms or zucchini.
- Use homemade marinara sauce for a fresher flavor and to control sodium content.
- Leftovers can be stored in an airtight container in the refrigerator for up to 3 days.
- You can prepare the spaghetti squash in advance to save time on busy nights.
- For a spicier dish, add red pepper flakes to the marinara sauce before baking.

