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Low-carb chicken spinach mushroom bake dish ready to serve.

Easy Low-Carb Chicken Spinach Mushroom Bake

A comforting casserole featuring tender chicken, earthy mushrooms, and fresh spinach in a creamy Parmesan sauce, all while keeping it low-carb and delicious.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 4 servings
Course: Main Course
Cuisine: American
Calories: 550
Ingredients Method Notes

Ingredients
  

Main Ingredients
  • 4 pieces boneless, skinless chicken breasts One chicken breast generally serves one adult.
  • 2 cups fresh spinach, roughly chopped Use fresh spinach when in season for the best flavor.
  • 1 cup mushrooms, sliced (cremini or button) Mushrooms should be sautéed until browned.
  • 1 cup heavy cream Can swap for half-and-half for a lighter version.
  • 1 cup grated Parmesan cheese Freshly grated Parmesan melts better.
  • 4 cloves garlic, minced Provides aromatic flavor.
  • to taste Salt and pepper Season to personal preference.
  • 1–2 tablespoons Olive oil for cooking Used to sauté mushrooms and garlic.

Method
 

Preparation
  1. Preheat your oven to 375°F (190°C). Position the oven rack in the center.
  2. In a large skillet, heat about 1–2 tablespoons olive oil over medium heat. Add minced garlic and sliced mushrooms, cooking until softened for 5–7 minutes.
  3. In a baking dish, lay the chicken breasts in a single layer. Top with cooked mushrooms, then pile chopped spinach over them.
  4. In a bowl, whisk together heavy cream and grated Parmesan cheese until smooth. Pour this mixture evenly over chicken, mushrooms, and spinach.
  5. Season the top lightly with salt and pepper and optionally drizzle with olive oil or extra Parmesan.
Baking
  1. Bake for 25–30 minutes until the chicken is cooked through and the top is golden and bubbly, reaching an internal temperature of 165°F (74°C).
  2. If top browns too quickly, tent loosely with foil for the last 5–10 minutes.
Serving
  1. Serve warm, spooning the creamy mushroom-spinach sauce over the chicken. Garnish with fresh parsley or a squeeze of lemon if desired.

Notes

For a slightly crispier top, broil on high for 1–2 minutes at the very end. Store leftovers in an airtight container for up to 3–4 days, and the bake freezes well for up to 2 months.