why make this recipe
Chicken Spinach Mushroom Bake is a comforting dish that’s packed with flavors and nutrients. It’s perfect for a family dinner and easy to prepare, making it a great choice for busy weeknights. This recipe combines tender chicken, fresh spinach, and mushrooms, all wrapped in a creamy sauce and topped with gooey cheese. Not only is it delicious, but it’s also a hearty, low-carb meal that everyone will enjoy.
how to make Chicken Spinach Mushroom Bake
Ingredients :
- Chicken Breasts: 2 lbs (approx. 4 medium) boneless, skinless chicken breasts, cut into 1-inch cubes. Chicken thighs can also be used for extra flavor and moisture, just ensure they are boneless and skinless.
- Olive Oil (or Avocado Oil): 2 tablespoons, divided. This is for searing the chicken and sautéing the vegetables, adding flavor and preventing sticking.
- Mushrooms: 1 lb (16 oz) cremini or white button mushrooms, sliced. Cremini (baby bella) mushrooms offer a deeper, earthier flavor, but standard white mushrooms work wonderfully too.
- Fresh Spinach: 10 oz fresh baby spinach. It might look like a lot, but spinach wilts down significantly. Ensure it’s washed and dried thoroughly.
- Onion: 1 medium yellow onion, finely chopped. This provides a foundational aromatic sweetness.
- Garlic: 4-6 cloves, minced. Adjust to your garlic preference; more is often better for flavor!
- Cream Cheese: 8 oz, softened and cut into cubes. This is the secret to the ultra-creamy texture of the sauce. Full-fat is recommended for the best flavor and keto-friendliness.
- Heavy Cream: 1 cup. Adds richness and helps create a smooth sauce.
- Chicken Broth: 1/2 cup (low sodium recommended). This helps to thin the sauce to the perfect consistency and adds another layer of savory flavor.
- Parmesan Cheese: 1/2 cup, freshly grated. Provides a salty, nutty kick to the sauce. Pre-grated can be used, but freshly grated melts better and has a superior flavor.
- Mozzarella Cheese: 1.5 cups, shredded, divided. This is for that glorious, gooey, golden-brown cheesy topping. Low-moisture, part-skim mozzarella works best for melting.
- Italian Seasoning: 1 tablespoon. A blend of dried oregano, basil, thyme, rosemary, and marjoram that adds a classic Mediterranean flavor.
- Salt: 1 teaspoon, or to taste. Adjust based on the saltiness of your broth and Parmesan.
- Black Pepper: 1/2 teaspoon, freshly ground, or to taste.
Directions:
- Preheat your oven to 375°F (190°C). Lightly grease a 9×13 inch baking dish or a similar-sized casserole dish.
- Season the chicken generously with about 1/2 teaspoon of salt and 1/4 teaspoon of black pepper.
- Heat 1 tablespoon of olive oil in a large skillet or Dutch oven over medium-high heat.
- Once the oil is shimmering, add the chicken cubes in a single layer (work in batches if necessary to avoid overcrowding the pan).
- Sear the chicken for 2-3 minutes per side, until lightly browned. It doesn’t need to be cooked through at this stage, as it will finish cooking in the oven.
- Remove the seared chicken from the skillet and set it aside.
- Add the chopped onion and sauté over medium heat for 3-4 minutes, until softened and translucent.
- Add the minced garlic and cook for another minute until fragrant, being careful not to burn it.
- Add the sliced mushrooms to the skillet. Cook, stirring occasionally, for 5-7 minutes, until they release their liquid and start to brown. Season the mushrooms with a pinch of salt and pepper.
- Toss in the spinach, stirring gently until all the spinach has wilted, about 2-3 minutes. If there’s any excess liquid from the spinach and mushrooms, allow it to evaporate for a minute or two.
- Gradually pour in the heavy cream and chicken broth, stirring constantly to create a smooth sauce.
- Stir in 1/4 cup of the grated Parmesan cheese and the Italian seasoning. Taste the sauce and adjust salt and pepper as needed.
- Mix everything gently until the chicken is well-coated with the creamy sauce.
- Pour the entire mixture into your prepared baking dish, spreading it out evenly.
- Sprinkle the remaining 1/4 cup of grated Parmesan cheese over the mozzarella for extra flavor and a golden crust.
- Place the baking dish in the preheated oven.
- Bake for 20-25 minutes, or until the sauce is bubbly around the edges and the cheese topping is melted, golden brown, and slightly crispy in spots.
- Garnish with fresh chopped parsley or red pepper flakes, if desired. Serve hot and enjoy your delicious low-carb meal!

how to serve Chicken Spinach Mushroom Bake
Serve this Chicken Spinach Mushroom Bake hot from the oven. It pairs well with a simple side salad or steamed vegetables for a complete meal. You can also serve it over cauliflower rice or zucchini noodles for a low-carb option.
how to store Chicken Spinach Mushroom Bake
To store leftovers, let the dish cool completely then transfer it to an airtight container. It can be kept in the refrigerator for up to 3-4 days. To reheat, simply warm it in the oven or microwave until heated through.
tips to make Chicken Spinach Mushroom Bake
- Use fresh ingredients for the best flavor, especially the spinach and mushrooms.
- Feel free to adjust the garlic and cheese quantities based on your taste preferences.
- If you like a bit of spice, consider adding red pepper flakes to the sauce or during serving.
variation
You can customize this recipe by adding other vegetables like bell peppers or zucchini. For a different flavor profile, try adding a splash of white wine to the sauce.
FAQs
Q: Can I use frozen spinach instead of fresh?
A: Yes, frozen spinach can be used. Just make sure to thaw and drain it well before adding to the recipe.
Q: Is this recipe gluten-free?
A: Yes, the recipe is gluten-free as long as you ensure that the chicken broth and other ingredients do not contain gluten.
Q: Can I make this dish ahead of time?
A: Absolutely! You can prepare everything up to the baking step ahead of time, store it in the refrigerator, and bake it just before serving.

Chicken Spinach Mushroom Bake
Ingredients
Method
- Preheat your oven to 375°F (190°C). Lightly grease a 9x13 inch baking dish or a similar-sized casserole dish.
- Season the chicken generously with about 1/2 teaspoon of salt and 1/4 teaspoon of black pepper.
- Heat 1 tablespoon of olive oil in a large skillet or Dutch oven over medium-high heat.
- Once the oil is shimmering, add the chicken cubes in a single layer and sear for 2-3 minutes per side until lightly browned.
- Remove the seared chicken from the skillet and set aside.
- Add the chopped onion to the skillet and sauté over medium heat for 3-4 minutes until softened.
- Add the minced garlic and cook for another minute until fragrant.
- Add the sliced mushrooms and cook for 5-7 minutes until they release their liquid and start to brown.
- Stir in the spinach until wilted, about 2-3 minutes.
- Gradually pour in the heavy cream and chicken broth, stirring constantly.
- Stir in 1/4 cup of the grated Parmesan cheese and Italian seasoning, adjusting salt and pepper to taste.
- Mix in the seared chicken until well-coated with the creamy sauce.
- Pour the entire mixture into the prepared dish, spreading it out evenly.
- Sprinkle the remaining 1/4 cup of Parmesan cheese over the mozzarella.
- Bake for 20-25 minutes until bubbly and the cheese is melted and golden brown.
- Garnish with fresh parsley or red pepper flakes if desired.