Easy 40-Minute Chicken, Spinach & Mushroom Low-Carb Bake

Creamy Keto Chicken Bake with Spinach & Mushrooms (Healthy & Family-Friendly)

Looking for a quick low-carb dinner recipe that’s creamy, cheesy, and packed with flavor? This easy chicken spinach mushroom bake is the perfect keto-friendly comfort food ready in just 40 minutes!

Juicy chicken, tender mushrooms, and fresh spinach are baked in a rich, creamy sauce and topped with melted mozzarella making it a healthy low-carb chicken casserole your whole family will love.

Why You’ll Love This Recipe

Low-Carb & Keto-Friendly Perfect for anyone following a keto diet or reducing carbs
High in Protein Chicken provides lean protein to keep you full longer
Nutrient-Rich Spinach adds iron, vitamins, and antioxidants
Quick & Easy Ready in just 40 minutes for busy weeknights
One-Pan Meal Less cleanup, more convenience
Gluten-Free Naturally gluten-free ingredients

Ingredients (Serves 6)

1.5 lb boneless, skinless chicken breasts or thighs

8 oz fresh mushrooms, sliced

5 oz fresh baby spinach

1 small yellow onion, diced

3 cloves garlic, minced

1 cup heavy cream (or coconut cream for dairy-free option)

1½ cups shredded mozzarella cheese

¼ cup grated Parmesan cheese (optional, for extra flavor)

2 tbsp olive oil or butter

1 tsp salt

½ tsp black pepper

¼ tsp red pepper flakes (optional, for a little heat)

Instructions

1. Preheat oven to 375°F (190°C). Lightly grease a baking dish.

2. Cook the chicken
Heat olive oil or butter in a large skillet over medium heat.
Season chicken with salt and pepper, then sear for 4–5 minutes per side until lightly golden (it doesn’t need to be fully cooked). Remove and set aside.

3. Sauté vegetables
In the same skillet, cook onions until soft. Add garlic and mushrooms, sauté until mushrooms release moisture and become tender.

4. Add spinach & cream
Stir in spinach and cook until wilted. Pour in heavy cream and let simmer for 2–3 minutes until slightly thickened.

5. Assemble the bake
Place chicken in the baking dish. Pour the creamy spinach mushroom mixture over the top.

6. Add cheese
Sprinkle mozzarella and Parmesan evenly over the dish.

7. Bake
Bake for 20–25 minutes, or until chicken is fully cooked and cheese is bubbly and golden.

Pro Tips for the Best Low-Carb Chicken Bake

Use chicken thighs for extra juiciness and flavor

Don’t overcrowd the pan when searing chicken this helps it brown better

Add cream cheese for an even richer, thicker sauce

For extra flavor, sprinkle in Italian seasoning or paprika

Let the dish rest 5 minutes before serving to thicken the sauce

Serving Ideas

Pair this creamy chicken spinach casserole with:

Cauliflower rice (perfect low-carb option)

Zucchini noodles

Fresh green salad

Steamed broccoli or asparagus

Storage & Meal Prep:

Refrigerator: Store in an airtight container for up to 3 days

Freezer: Freeze for up to 2 months

Reheat: Warm in oven or microwave until heated through