Name: Mexican Spaghetti Squash Casserole Recipe
Prep time: 20 min
Cook time: 1 h 10 min
Total time: 1 h 30 min
Cuisine: Mexican
Ingredients: 2 lbs spaghetti squash (cooked & cooled slightly); 2 bell peppers (chopped into small pieces); 11.5 oz can of corn (drained; 341 mL); 18 oz can of diced tomatoes (including juices; 541 mL); 4.3 oz can of green chiles (127 mL); 1 lb ground turkey; 18 oz can of black beans (drained & rinsed; 541 mL); 2 eggs; 1 tablespoon mild chili powder; 1 tablespoon cumin; 1/2 teaspoon salt; 10 oz can of mild enchilada sauce (300 mL); 2 cups cheese (divided; mozzarella or Monterey Jack)

Jump to Recipe· 4.1 from 34 reviews

If you’re looking for a dish that bursts with vibrant flavors, nourishing ingredients, and satisfying textures, you’ve got to try this Mexican Spaghetti Squash Casserole Recipe. It’s a delightful twist on classic Mexican comfort food that swaps traditional pasta for nutritious spaghetti squash, packed with zesty spices, hearty ground turkey, and melty cheese. Each bite perfectly balances smoky, spicy, and savory notes while keeping things light and wholesome. Whether you’re a seasoned home cook or just dipping your toes into healthier twists on casseroles, this recipe is sure to become a beloved favorite in your kitchen.

Ingredients You’ll Need

The image shows a large silver mixing bowl on a white marbled surface. Inside the bowl, there are five distinct sections of ingredients. At the top left, there is light beige ground meat with a crumbly texture. Next to it on the top right is a pile of small, chopped orange bell peppers. Below the bell peppers, there is a heap of thin, yellow, spaghetti-like strands of squash. In the center, there is a small mound of greenish chopped pickles. Near the ground meat on the left side, there are small piles of three visible powdered spices in dark brown, light brown, and white colors. photo taken with an iphone --ar 4:5 --v 7

Gathering your ingredients is a breeze, and each one plays a crucial role in building the layers of flavor, texture, and color that make this casserole truly shine. From the tender strands of spaghetti squash to the creamy cheese topping, everything comes together seamlessly.

2 lbs spaghetti squash (cooked & cooled slightly): The star vegetable that replaces pasta with tender, subtly sweet strands.
1 lb ground turkey: A lean protein that adds heartiness without heaviness.
2 bell peppers (chopped into small pieces): Bring a crisp, fresh crunch and vibrant color.
11.5 oz can of corn (drained): Adds natural sweetness and a pop of yellow.
18 oz can of black beans (drained & rinsed): Boosts fiber and complements the rustic flavors perfectly.
4.3 oz can of green chiles: Offers mild heat and a touch of smoky goodness.
18 oz can of diced tomatoes (including juices): Infuses moisture and a zesty tomato base.
10 oz can of mild enchilada sauce: A saucy, tangy layer that ties all the flavors together.
1 tablespoon mild chili powder: Provides gentle warmth and authentic Mexican flavor.
1 tablespoon cumin: Earthy spice that adds depth and aroma.
1/2 teaspoon salt: Enhances all the vibrant tastes.
2 eggs: Help bind the casserole for a satisfying, sliceable texture.
2 cups cheese (divided; mozzarella or monterey jack): gooey, melty goodness that crowns the dish beautifully.

How to Make Mexican Spaghetti Squash Casserole Recipe

Step 1: Cook and Prepare the Spaghetti Squash

Start by roasting or microwaving your spaghetti squash until tender (about 40-50 minutes for roasting). Once cooked, let it cool just enough to handle, then slice it in half, scoop out the seeds, and gently shred the flesh with a fork to create those perfect spaghetti-like strands. This step is the foundation of your casserole, so be gentle to keep the texture light and fluffy.

Step 2: Brown the Ground Turkey

Preheat your oven to 350°F (175°C) and place a nonstick skillet over medium heat. Add the ground turkey, breaking it up with a spatula, and cook until it’s no longer pink, about 7 minutes. This will add a lean, savory base for your casserole’s filling. After cooking, let the turkey cool slightly so it mixes smoothly in the next steps.

Step 3: Combine All the Ingredients

In a large mixing bowl, combine the cooked spaghetti squash strands, browned turkey, chopped bell peppers, drained corn, rinsed black beans, green chiles, diced tomatoes with their juices, enchilada sauce, chili powder, cumin, salt, and eggs. Stir everything thoroughly until evenly mixed. Reserve 3/4 cup of the cheese for topping.

Step 4: Assemble and Bake the Casserole

Scrape the mixture into a deep 9×13-inch casserole dish, smoothing it out evenly. Sprinkle the reserved 3/4 cup cheese all over the top. Cover the dish and bake in your preheated oven for 45 minutes to let the flavors meld and the casserole set. Then uncover and bake for another 15 minutes until bubbling and golden on top.

Step 5: Rest Before Serving

Once baked, allow your Mexican Spaghetti Squash Casserole Recipe to rest for at least 10 minutes. This resting time is crucial as it helps the casserole firm up so you can serve perfect slices without the mixture sliding apart. Plus, the flavors settle beautifully, making every bite more harmonious.

How to Serve Mexican Spaghetti Squash Casserole Recipe

A bowl with a white color holds a layered dish with three main layers. The bottom layer is a chunky mix of cooked ground meat and orange vegetable pieces. The middle layer has black beans and yellow corn scattered evenly. The top layer is melted creamy cheese, looking soft and slightly browned in some spots. A few green herb bits are on top, and a sprig of green herb rests beside the dish inside the bowl. A spoon is placed inside the bowl next to the food, and the bowl sits on a white marbled surface. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

To elevate your casserole, consider topping with fresh cilantro, a dollop of sour cream or Greek yogurt, a squeeze of lime juice, or some sliced avocado. These garnishes add freshness, creaminess, and a zing that complements the rich layers of the casserole beautifully.

Side Dishes

This casserole pairs wonderfully with simple sides like a crisp green salad dressed with lime vinaigrette or Mexican-style street corn (elote). You can also serve it alongside warm tortillas to scoop up any cheesy leftovers, making the meal even more festive and filling.

Creative Ways to Present

If you’re serving a crowd or want to jazz things up, try layering the casserole in individual ramekins for personalized portions. Alternatively, spoon it over a bed of cilantro-lime rice or inside warm tortillas for a fun casserole burrito option that’s sure to impress.

Make Ahead and Storage

Storing Leftovers

Once cooled, cover your leftovers tightly with plastic wrap or transfer to an airtight container. Stored in the refrigerator, your casserole will keep well for up to 4 days, allowing you to enjoy its flavors without missing a beat.

Freezing

This Mexican Spaghetti Squash Casserole Recipe freezes wonderfully. Portion into freezer-safe containers or wrap the whole casserole tightly with foil and plastic wrap. Freeze for up to 3 months. To thaw, move it to the refrigerator overnight before reheating gently to retain its texture and flavor.

Reheating

For best results, reheat leftovers in the oven at 350°F until warmed through and bubbly, about 15-20 minutes. You can also microwave individual servings covered loosely with a damp paper towel for shorter reheating but with a little less crispness on top.

FAQs

Can I use ground beef or chicken instead of turkey?

Absolutely! Ground beef or chicken works perfectly as a swap in this casserole and will give you a slightly different flavor while keeping that hearty texture.

Is it necessary to cook the spaghetti squash before mixing?

Yes, cooking the squash first softens the flesh into those noodle-like strands and prevents the casserole from being crunchy or undercooked.

Can I make this casserole vegetarian?

Yes! Simply omit the ground turkey and add extra beans or vegetables like zucchini or mushrooms to keep it filling and flavorful.

What type of cheese is best for this recipe?

Mozzarella or Monterey Jack are ideal because they melt smoothly and have a mild taste that complements the spices without overpowering the dish.

How spicy is this casserole?

This recipe is mild, thanks to the mild chili powder and enchilada sauce, but you can always add more spices or hot sauce to suit your heat preference.

Final Thoughts

This Mexican Spaghetti Squash Casserole Recipe is a joyful celebration of bold flavors and wholesome ingredients, perfect for any night of the week. It blends comfort and nutrition in a way that feels both special and approachable. I hope you’ll give it a try and watch it quickly become a treasured staple in your meal rotation, just like it did in mine!