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Stuffed Acorn Squash with Italian Sausage, Spinach, and Cheese

Stuffed Acorn Squash is a delicious way to enjoy fall squash with a savory, cheesy filling. This recipe combines roasted acorn squash with Italian sausage, spinach, cream cheese, mozzarella, and feta for a comforting meal that’s full of flavor.

The Italian sausage adds plenty of seasoning, while the cream cheese makes the filling creamy, and the mozzarella and feta add even more cheesy goodness. It’s a great recipe for a fall dinner when acorn squash is in season, but you can enjoy it any time you find squash at the grocery store.

This stuffed acorn squash recipe is also easy to prepare. While the squash roasts in the oven, you can cook the sausage filling on the stovetop. Once everything is assembled, a few more minutes in the oven melts the cheese and brings all the flavors together.

Why You’ll Love This Stuffed Acorn Squash Recipe

A hearty meal: Italian sausage, spinach, and three kinds of cheese make a satisfying filling.
Perfect for fall: Acorn squash is a wonderful seasonal ingredient for cooler-weather meals.
Easy to prepare: The filling comes together while the squash roasts, so you can work on both parts at the same time.
Naturally low in carbohydrates: This recipe skips breadcrumbs, rice, and other starchy fillers.

Ingredients for Stuffed Acorn Squash

Acorn squash: You’ll need two acorn squash, cut in half lengthwise with the seeds removed. Choose squash that feel firm and heavy for their size.

Olive oil: A little olive oil helps the squash roast and keeps the flesh from drying out.

Ground Italian sausage: Use mild or spicy Italian sausage, depending on how much heat you prefer. The sausage provides plenty of savory flavor for the filling.

Onion and garlic: Diced onion and minced garlic add flavor and aroma to the sausage mixture.

Spinach: Fresh or frozen spinach works well in this recipe. If you use frozen spinach, thaw it first and squeeze out excess moisture.

Cream cheese: Cream cheese makes the filling rich and creamy while helping the other ingredients come together.

Mozzarella cheese: Shredded mozzarella melts beautifully into the filling and on top of the squash.

Feta cheese: Feta adds a salty, tangy flavor that balances the richness of the sausage and cream cheese.

Garlic pepper: Sprinkle garlic pepper over the squash before roasting to add extra flavor. You can also use salt and black pepper if that’s what you have on hand.

How to Make Stuffed Acorn Squash

Step 1: Prepare the Acorn Squash

Preheat your oven to 400°F. Line a baking sheet with aluminum foil, parchment paper, or a Silpat mat for easier cleanup.

Cut each acorn squash in half lengthwise and scoop out the seeds and stringy pieces from the center. Brush the inside of each squash half with 1 tablespoon of olive oil and sprinkle with garlic pepper or salt and pepper.

Place the squash halves cut-side down on the prepared baking sheet. Roast for 30–40 minutes, or until the flesh is tender when pierced with a fork. The exact cooking time will depend on the size of your squash.

Step 2: Cook the Sausage Filling

While the squash is roasting, heat the remaining tablespoon of olive oil in a large frying pan over medium heat. Add the diced onion and cook until it begins to soften.

Add the minced garlic and ground Italian sausage. Break the sausage into smaller pieces as it cooks, stirring frequently until the meat is thoroughly cooked.

If your sausage releases a lot of grease, you can carefully drain off the excess before continuing.

Step 3: Add the Spinach and Cheese

Add the spinach, cream cheese, and ½ cup of shredded mozzarella cheese to the sausage mixture.

Continue cooking and stirring until the spinach is heated through and the cream cheese and mozzarella have melted into the filling. The mixture should be creamy and well combined.

If you’re using frozen spinach, make sure it has been thawed and drained well before adding it to the pan.

Step 4: Fill the Squash Halves

Once the squash is tender, carefully remove the baking sheet from the oven and turn the squash halves cut-side up.

Use a fork to gently mash the inside of each squash half. This makes the squash easier to eat and allows some of the roasted flesh to mix with the filling. Be careful not to break through the skin.

Divide the sausage mixture evenly among the four squash halves. Sprinkle the remaining ¼ cup of mozzarella cheese and the ½ cup of feta cheese over the tops.

Step 5: Melt the Cheese and Serve

Return the stuffed squash to the oven and bake for another 4–8 minutes, or until the cheese has melted and the filling is heated through.

Let the squash cool for a few minutes before serving, since the filling will be very hot. Serve the squash halves warm as a hearty main dish or alongside your favorite vegetables.

Tips for Making the Best Stuffed Acorn Squash

Choose squash that are similar in size. This helps the four halves cook at approximately the same rate. Smaller squash may be tender sooner, while larger ones may need additional roasting time.

Check the squash before adding the filling. The squash should be tender enough to pierce easily with a fork. If it is still firm, give it a little more time in the oven before stuffing.

Drain frozen spinach well. Excess water can make the filling thinner than you want. Thaw the spinach and squeeze out as much moisture as possible before adding it.

Adjust the sausage to your taste. Mild Italian sausage gives the filling a savory flavor without much heat, while spicy Italian sausage adds a little kick.

Don’t skip the final bake. The short return to the oven melts the cheese on top and ensures the filling is hot when served.

Variations and Substitutions

Try a different sausage. Ground pork sausage or turkey Italian sausage can be used instead of traditional Italian sausage. Keep in mind that different varieties may change the flavor and amount of grease in the filling.

Use a different cheese. If you don’t have feta, try Parmesan or another cheese you enjoy. The flavor will be a little different, but it will still make a delicious filling.

Use fresh or frozen spinach. Both options work well. Just remember to thaw and drain frozen spinach before using it.

Make it spicier. Spicy Italian sausage is an easy way to add heat. You can also add a pinch of red pepper flakes to the filling if you like a little extra spice.

What to Serve with Stuffed Acorn Squash

This stuffed acorn squash is hearty enough to serve as a meal on its own, but it also pairs well with simple side dishes.

Roasted broccoli, green beans, Brussels sprouts, or a fresh garden salad are all good options. If you’re serving it for a family dinner, you could also add roasted carrots or another seasonal vegetable.

Because the squash is filled with sausage, spinach, and cheese, lighter vegetable sides help balance the meal.

How to Store Leftover Stuffed Acorn Squash

Refrigerator: Allow leftovers to cool, then place them in an airtight container and refrigerate within two hours of cooking. For the best quality, eat them within 3–4 days.

Reheating: Place the squash in an oven-safe dish, cover loosely with foil, and reheat at 350°F until the filling reaches 165°F. You can also reheat individual portions in the microwave until heated through.

Freezing: You can freeze leftover stuffed squash in an airtight, freezer-safe container, although the texture of the squash and cream cheese filling may change slightly after thawing. Thaw overnight in the refrigerator before reheating.

Frequently Asked Questions

Do you peel acorn squash before cooking it?

No, you don’t need to peel acorn squash for this recipe. The squash is roasted in its skin, which helps hold the filling. You can scoop out the tender flesh as you eat.

Can I make stuffed acorn squash ahead of time?

Yes. You can roast the squash and prepare the sausage filling ahead of time. Refrigerate them separately, then assemble the squash with the filling and cheese when you’re ready to finish cooking. You may need to add a few extra minutes to the final baking time if the ingredients are cold.

How do I know when acorn squash is done roasting?

The squash is ready when a fork slides easily into the flesh. If it still feels firm, continue roasting and check again after a few minutes.

Can I use frozen spinach instead of fresh spinach?

Yes. Frozen spinach works well and is convenient to keep on hand. Thaw it completely and squeeze out the excess liquid before adding it to the sausage mixture.

Is stuffed acorn squash low-carb?

This recipe can fit into a low-carbohydrate eating plan because the filling contains sausage, spinach, and cheese rather than breadcrumbs or rice. However, acorn squash itself contains carbohydrates, so the amount in each serving will depend on the size of the squash and the portion size eaten.

Enjoy This Stuffed Acorn Squash Recipe

If you’re looking for a cozy fall dinner that feels a little different from the usual weeknight meals, this Stuffed Acorn Squash is worth trying. The combination of Italian sausage, spinach, cream cheese, mozzarella, and feta makes a flavorful filling that pairs beautifully with tender roasted squash.

Serve it fresh from the oven for a satisfying dinner, and save any leftovers for an easy meal the next day. Any leftover filling makes a great breakfast when mixed with eggs.

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