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.

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

8 Delicious Chicken Spinach and Mushroom Low Carb

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

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Instructions

Preheat oven to 375°F (190°C) and lightly grease a casserole dish.
Heat olive oil in a large skillet over medium heat. Add onion and mushrooms; sauté for 5–7 minutes until softened.
Add garlic and cook for 1 minute until fragrant.
Stir in spinach and cook just until wilted. Season with salt, pepper, and Italian seasoning.
Spread cooked chicken evenly in the prepared casserole dish.
Spoon the spinach and mushroom mixture over the chicken.
Pour heavy cream evenly over the dish.
Top with mozzarella cheese and sprinkle with parmesan.
Bake uncovered for 20–25 minutes, until cheese is melted and lightly golden.
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