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Low-carb chicken bake with spinach and mushrooms in a casserole dish

Easy Low-Carb Chicken Spinach Mushroom Bake

A comforting, low-carb casserole featuring tender chicken, earthy mushrooms, and wilted spinach, all topped with melty cheese.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Course Dinner, Main Course
Cuisine American, Comfort Food
Servings 6 servings
Calories 450 kcal

Ingredients
  

Main Ingredients

  • 1.5 lbs boneless, skinless chicken breasts, cut into bite-sized pieces
  • 10 oz fresh mushrooms, sliced
  • 6 cups fresh baby spinach, roughly chopped
  • 1 medium onion, finely chopped
  • 2 cloves garlic, minced
  • 1 cup shredded mozzarella (or a melty blend)
  • 1/2 cup grated Parmesan
  • 1 cup heavy cream or full-fat coconut cream
  • 2 tbsp olive oil
  • 1 tsp dried thyme
  • 1/2 tsp smoked paprika
  • Salt and black pepper to taste
  • 1/4 cup chopped fresh parsley for garnish Optional

Instructions
 

Preparation

  • Preheat your oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish.
  • In a large skillet over medium-high heat, warm 1 tbsp olive oil.
  • Season the chicken with salt, pepper, and smoked paprika, then sear until golden (about 3–4 minutes per side). Remove and set aside.
  • In the same skillet, add the remaining olive oil, onions, and mushrooms. Cook until mushrooms release their juices and the onions are soft, about 5–7 minutes. Add garlic and cook for another 30 seconds.
  • Add the spinach to the skillet and stir until just wilted. Season lightly and remove from heat.
  • In a bowl, whisk the heavy cream with thyme and a pinch of salt and pepper.
  • Layer the seared chicken in the baking dish, spread the mushroom-spinach mixture on top, pour the cream over everything, and finish with mozzarella and Parmesan.

Baking

  • Cover with foil and bake for 20 minutes.
  • Remove foil and bake for an additional 10–12 minutes, or until the cheese is bubbly and golden and the chicken registers 165°F (74°C).

Finishing

  • Let the bake rest for 5 minutes, garnish with parsley, and serve warm.

Notes

For extra richness, stir a tablespoon of Dijon mustard into the cream before pouring it over the dish. If prepping ahead, assemble the bake up to the point of adding cheese, cover, and refrigerate for up to 24 hours; add cheese and bake when ready.

Nutrition

Serving: 1gCalories: 450kcalCarbohydrates: 7gProtein: 32gFat: 34gSaturated Fat: 15gSodium: 600mgFiber: 2gSugar: 1g
Keyword Casserole, chicken, Low-Carb, Mushroom, Spinach
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