Chicken Spinach and Mushroom Low-Carb Casserole Recipe

Nothing beats a warm, cheesy casserole bubbling fresh from the oven, especially when it’s packed with wholesome ingredients that satisfy your cravings without loading you up on carbs. The Chicken Spinach and Mushroom Low-Carb Casserole Recipe is like a magic ticket to comfort food heaven—juicy chicken, earthy mushrooms, vibrant spinach, and melty cheese all come together in a creamy, dreamy dish you’ll want to make again and again. Whether you’re counting carbs or just searching for a hearty weeknight winner, this casserole delivers big on flavor and keeps things delightfully light.

Ingredients You’ll Need

These ingredients may seem simple, but each one plays a starring role in creating the rich layers of taste and texture that make this casserole so irresistible. From tender chicken to fresh spinach and savory cheeses, they come together like old friends in a beautiful, low-carb harmony.

• 1.5 pounds boneless, skinless chicken breasts: Poach or shred rotisserie for juicy, tender chicken that’s the protein powerhouse of the dish.
• 10 ounces fresh spinach: Adds vibrant color and a mild bite, plus a burst of leafy goodness; frozen works too—just drain well.
• 8 ounces cremini mushrooms: Thinly sliced to bring a tender, earthy flavor that balances the richness.
• 1 medium onion: Finely diced to add subtle sweetness and depth.
• 2 cloves garlic: Minced for that essential aromatic punch you can’t skip.
• 1 cup heavy cream: The secret to a creamy, luscious texture that ties everything together.
• 1 cup shredded mozzarella cheese: Melts beautifully for gooey, cheesy goodness.
• 1/2 cup grated Parmesan cheese: Offers a nutty, salty kick that elevates the whole dish.
• 2 tablespoons olive oil: Perfect for sautéing vegetables and infusing flavor.
• 1 teaspoon dried Italian seasoning: A fragrant mix that rounds out the casserole perfectly.
• Salt and pepper: Season to taste, remembering to go light on salt since the cheeses add plenty.

How to Make Chicken Spinach and Mushroom Low-Carb Casserole Recipe

Step 1: Prep Your Ingredients

Before diving in, it’s a good idea to get everything ready. Shred the cooked chicken, slice the mushrooms nice and thin for delicate bites, and chop the spinach. If you’re using fresh spinach, give it a good rinse to clear away any sand or grit—it’s worth taking that little extra time for a clean, fresh taste in your Chicken Spinach and Mushroom Low-Carb Casserole Recipe.

Step 2: Sauté the Veggies

Heat olive oil in a large skillet over medium heat, then toss in the diced onion and minced garlic. Let these soften and fill your kitchen with that irresistible aroma. After about three minutes, add the mushrooms and spinach. Cook until the mushrooms are tender and the spinach has wilted down. Stir often so nothing sticks or burns—this step really builds the foundation of flavor for your casserole.

Step 3: Mix It All Together

In a large bowl, combine the shredded chicken with your sautéed veggies. Pour in the heavy cream, sprinkle over the Italian seasoning, and add both mozzarella and Parmesan cheeses. Stir everything with love until the mixture is creamy and cozy—think of this as the flavor hug stage of your Chicken Spinach and Mushroom Low-Carb Casserole Recipe. Give it a taste, then season with salt and pepper just right.

Step 4: Assemble and Bake

Preheat your oven to 375°F (190°C). Grease a 9×13 baking dish and spread your chicken, veggie, and cheese mixture evenly inside. Don’t forget to sprinkle a little extra mozzarella on top for that golden, bubbly finish everyone loves. Bake uncovered for 25 to 30 minutes or until the casserole is heated through and the cheese turns bubbly and delicious.

Step 5: Let It Rest

This final step might be the hardest because the aroma is so tempting, but allow the casserole to rest for about 5 minutes once it’s out of the oven. This gives the flavors a chance to meld and the casserole to firm up slightly so your first serving holds together perfectly—plus, no burnt tongues here when you dive into your Chicken Spinach and Mushroom Low-Carb Casserole Recipe!

How to Serve Chicken Spinach and Mushroom Low-Carb Casserole Recipe

Garnishes

Adding a sprinkle of freshly chopped parsley or a pinch of crushed red pepper flakes can brighten up the dish visually and add a little fresh or spicy kick. A light drizzle of extra virgin olive oil or a squeeze of lemon on top right before serving also brings a lovely touch that complements the creamy casserole beautifully.

Side Dishes

This casserole is quite rich and filling on its own, but if you want to round out the meal, try a crisp green salad with vinaigrette or some roasted asparagus. Both add fresh, crunchy texture and keep the meal feeling balanced and satisfying without disrupting the low-carb vibe.

Creative Ways to Present

For a fun twist, serve individual portions in ramekins or scooped into bell pepper halves for mini casseroles that wow guests. You can also turn leftovers into a breakfast hash skillet by dicing and heating with eggs and a sprinkle of cheese—delicious and resourceful ways to keep enjoying your Chicken Spinach and Mushroom Low-Carb Casserole Recipe.

Make Ahead and Storage

Storing Leftovers

Once cooled, transfer leftover casserole to an airtight container and keep it in the refrigerator. It stays fresh for up to 3 days, which means easy heat-and-eat meals are ready to go on busy days.

Freezing

This casserole freezes beautifully. Wrap tightly with plastic wrap and then foil or use a freezer-safe container. It can be frozen for up to 2 months, making it a perfect make-ahead dish for stocked freezer meals.

Reheating

For reheating, thaw overnight in the refrigerator if frozen. Warm individual portions in the microwave or reheat the whole dish covered in a 350°F oven until heated through, about 15-20 minutes. Add a little extra cheese on top before warming for a melty finish.

FAQs

Can I use frozen spinach instead of fresh?

Absolutely! Just make sure to thaw it fully and squeeze out excess water so your casserole doesn’t get watery. Frozen spinach is a great time-saver and works perfectly in this recipe.

Is there a substitute for heavy cream?

You can use full-fat coconut milk or cream cheese as alternatives, but keep in mind this may slightly change the flavor and texture. Heavy cream gives that signature richness that’s key for this casserole.

Can I make this dish dairy-free?

Yes, using dairy-free cheeses and substitutes for heavy cream can make this dairy-free. Look for plant-based creams and meltable vegan cheeses to adapt it without losing the creamy comfort.

How low is this casserole in carbs?

This wonderful Chicken Spinach and Mushroom Low-Carb Casserole Recipe has roughly 5 grams of carbs per serving, making it an excellent choice for low-carb or keto lifestyles while still being super satisfying.

What can I use if I don’t have Italian seasoning?

A simple blend of dried basil, oregano, thyme, and rosemary works great as a DIY Italian seasoning. It adds the same lovely herby notes that bring this casserole together.

Final Thoughts

There’s something truly special about this Chicken Spinach and Mushroom Low-Carb Casserole Recipe—it feels like a warm hug plated up with cozy comfort and bright flavors. It’s easy to make, packed with nourishing ingredients, and flexible enough to suit your pantry and preferences. Give it a try and let it become one of your go-to dishes for busy nights, gatherings, or whenever you’re craving a little cheesy, veggie-loaded love.

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