Chicken Spinach and Mushroom Low Carb

If Chicken Spinach and Mushroom Low Carb is what you’re craving, I get it. Some days you want comfort food… but you also want to feel good after eating it (not like you need a nap and a stretchy waistband). This is that kind of dinner: creamy, cheesy, warm, and weeknight-friendly—without a pile of carbs tagging along for the ride.

This one’s especially perfect when you’re juggling work, kids, errands, or all three at once—and still want to put something real on the table. Think of it as your “I’ve got my life together” casserole… even if you’re currently wearing mismatched socks.

Why You’ll Love This Chicken Spinach and Mushroom Low Carb

  • Big comfort, low carb. Creamy and cheesy without turning into a pasta bake.
  • Easy ingredients. Nothing weird, nothing you can only find on aisle 47.
  • Family-friendly. Even picky eaters often accept spinach when it’s tucked under melty mozzarella (it’s basically camouflage).
  • Great for leftovers. This reheats like a champ—hello, stress-free lunch.

Ingredients You’ll Need

Each ingredient is pulling its weight here (no freeloaders in this casserole):

  • Cooked chicken breast (2 cups, chopped or shredded) – Lean protein and the base of the dish.
  • Fresh spinach (4 cups) – Wilts down into tender, green goodness.
  • Mushrooms (2 cups, sliced) – Adds that hearty, “meaty” texture without extra carbs.
  • Onion (1 small, finely chopped) – Sweetens and deepens the flavor.
  • Garlic (3 cloves, minced) – The “smells amazing” ingredient.
  • Olive oil (2 tablespoons) – For sautéing and a little richness.
  • Heavy cream (1/2 cup) – Creamy sauce base with minimal carbs.
  • Mozzarella (1 cup, shredded) – Melty blanket of comfort.
  • Parmesan (1/4 cup, grated) – Salty, nutty punch.
  • Salt & pepper (to taste) – The non-negotiables.
  • Italian seasoning (1 teaspoon) – That herby “I know what I’m doing” finish.

How to Make Chicken Spinach and Mushroom Low Carb Oven Dish

Let’s turn those ingredients into something you’ll want to eat straight from the casserole dish (no judgment—just use a fork).

1) Preheat and Prep

Preheat your oven to 375°F (190°C). Lightly grease a casserole dish with olive oil or cooking spray.

2) Sauté the Veggies

In a large skillet, heat olive oil over medium heat.

  • Add onion and mushrooms.
  • Sauté 5–7 minutes, until the mushrooms soften and the onions look glossy.
  • Add garlic and cook 1 minute (don’t let it burn—burnt garlic is a tiny tragedy).
  • Add spinach and stir until just wilted.
  • Season with salt, pepper, and Italian seasoning.

3) Add Chicken to the Dish

Spread your cooked chicken evenly across the bottom of your greased casserole dish.

4) Layer Like You Mean It

Spoon the sautéed spinach and mushroom mixture over the chicken.

Pour heavy cream evenly over the top—this is what makes everything feel cozy and saucy without being soupy.

5) Cheese Time

Top with mozzarella, then finish with a sprinkle of parmesan.

6) Bake to Golden Perfection

Bake uncovered for 20–25 minutes, until the cheese is melted and lightly golden.

7) Rest, Then Serve

Let it sit 5 minutes before serving. This helps everything set up so you get creamy scoops instead of a cheese landslide.

Serve it as-is, or with a side salad or roasted veggies if you want to feel extra virtuous.

Tips to Make It Even Easier (and Even Tastier)

  • Use rotisserie chicken when life is chaotic. Shred it and call it self-care.
  • Don’t overcook the spinach in the skillet. Just wilt it—your oven will finish the job.
  • Want more sauce? Add an extra splash of heavy cream (2–3 tablespoons). No one will complain.
  • Mushrooms hate crowding. If your pan is small, sauté them in batches so they brown instead of steam.
  • If your sauce looks a little weird in the pan… congratulations, you’re cooking. It all comes together in the oven like magic.

A Little Story From My Kitchen

This Chicken Spinach and Mushroom Low Carb dish became one of my go-to dinners during weeks when I was juggling “everything.” You know those nights—when you’re hungry, tired, and the thought of making a complicated meal feels personal. The first time I made it, I was mostly hoping the cheese would distract everyone long enough for them to forget they were eating spinach.

It worked. My family asked for seconds. I pretended it was because I’m an amazing planner… not because I needed a dinner that didn’t require extra brain cells.

Chicken Spinach and Mushroom Low Carb casserole in a baking dish, topped with golden chicken pieces, sautéed mushrooms, wilted spinach, and melted cheese.
Golden, creamy, and comforting—this Chicken Spinach and Mushroom Low Carb casserole is packed with mushrooms, spinach, and melty cheese for an easy dinner win.

FAQs About Chicken Spinach and Mushroom Low Carb

Can I use chicken thighs instead of chicken breast?

Absolutely. Cooked chicken thighs will be juicier and still work perfectly in this Chicken Spinach and Mushroom Low Carb bake.

Can I use frozen spinach?

Yes—just thaw it and squeeze out as much water as possible. Frozen spinach holds a lot of moisture, and we’re going for creamy, not watery.

What mushrooms work best?

Cremini and white button mushrooms are both great. Cremini gives a slightly deeper flavor, but honestly, use what’s in your fridge.

How do I store leftovers?

Store in an airtight container in the fridge for 3–4 days. Reheat in the microwave or oven until warm.

Can I freeze it?

You can, but creamy dishes sometimes change texture after freezing. If you do freeze it, thaw in the fridge overnight and reheat gently.

The Cozy Dinner You’ll Keep Repeating

There’s something so satisfying about pulling a bubbling casserole out of the oven and knowing dinner is handled—especially when it’s Chicken Spinach and Mushroom Low Carb and it tastes like comfort food without the carb crash. It’s warm, cheesy, and reliable… kind of like the friend who shows up with coffee and doesn’t ask you to explain the mess.

If you make it, don’t be surprised if it becomes part of your regular rotation. This dish has a way of making busy days feel a little more delicious.

Keep the Chicken Magic Going

  • If you loved the creamy, cheesy vibes here, you’ll probably also fall hard for Keto Garlic Mushroom Chicken Casserole—it’s the same cozy comfort with that mushroom goodness front and center.
  • Craving more leafy-green comfort? Try Creamy Chicken and Spinach Casserole for another easy dinner that feels like a warm hug (with cheese… always with cheese).
  • Want a fresh, lighter option to balance out your week? This Tzatziki Chicken Salad Recipe is perfect for lunches, meal prep, or “I need food but not a whole production.”
  • And if you’re in the mood for a different flavor twist without losing that easy dinner energy, Bruschetta Chicken Bake brings a bright, cheesy, tomato-y vibe that’s seriously craveable.

If you make this recipe, I’d love to hear how it turned out in your kitchen—leave a quick review and tap your star rating ⭐⭐⭐⭐⭐ so other readers know it’s worth making too!

Print
clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon
Chicken Spinach and Mushroom Low Carb casserole in a baking dish, topped with golden chicken pieces, sautéed mushrooms, wilted spinach, and melted cheese.

Chicken Spinach and Mushroom Low Carb


5 Stars 4 Stars 3 Stars 2 Stars 1 Star

No reviews

  • Author: Aneta
  • Total Time: 35 minutes
  • Yield: 4 servings 1x

Description

This Chicken Spinach and Mushroom Low Carb casserole is creamy, cheesy, and packed with tender chicken, sautéed mushrooms, and spinach. An easy oven-baked dinner that feels indulgent while staying low carb—perfect for busy weeknights or meal prep.


Ingredients

Scale
  • 2 cups cooked chicken breast, chopped or shredded

  • 4 cups fresh spinach

  • 2 cups mushrooms, sliced (cremini or white button)

  • 1 small onion, finely chopped

  • 3 cloves garlic, minced

  • 2 tablespoons olive oil

  • 1/2 cup heavy cream

  • 1 cup mozzarella cheese, shredded

  • 1/4 cup parmesan cheese, grated

  • Salt, to taste

  • Black pepper, to taste

  • 1 teaspoon Italian seasoning


Instructions

  1. Preheat oven to 375°F (190°C) and lightly grease a casserole dish.

  2. Heat olive oil in a large skillet over medium heat. Add onion and mushrooms; sauté for 5–7 minutes until softened.

  3. Add garlic and cook for 1 minute until fragrant.

  4. Stir in spinach and cook just until wilted. Season with salt, pepper, and Italian seasoning.

  5. Spread cooked chicken evenly in the prepared casserole dish.

  6. Spoon the spinach and mushroom mixture over the chicken.

  7. Pour heavy cream evenly over the dish.

  8. Top with mozzarella cheese and sprinkle with parmesan.

  9. Bake uncovered for 20–25 minutes, until cheese is melted and lightly golden.

  10. Let rest for 5 minutes before serving.

Notes

Rotisserie chicken works great to save time.

For extra creaminess, add 2–3 more tablespoons of heavy cream.

Letting the casserole rest helps it set and scoop cleanly.

This dish reheats well for leftovers.

  • Prep Time: 10 minutes
  • Cook Time: 25 minutes
  • Category: Dinner
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 portion
  • Calories: 420 kcal
  • Sugar: 2 g
  • Sodium: 620 mg
  • Fat: 30 g
  • Saturated Fat: 15 g
  • Unsaturated Fat: 13 g
  • Trans Fat: 0 g
  • Carbohydrates: 6 g
  • Fiber: 1.5 g
  • Protein: 35 g
  • Cholesterol: 135 mg

Leave a Comment

Recipe rating 5 Stars 4 Stars 3 Stars 2 Stars 1 Star