Cheesy Spinach Mushroom Bake
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Cheesy Spinach Mushroom Bake
This chicken spinach mushroom bake is the ultimate comfort food, featuring tender chicken and savory vegetables in a creamy, cheesy sauce. It’s ready in about an hour and makes the perfect easy chicken dinner for busy weeknights. Your family will love this simple yet satisfying creamy chicken bake.
I first created this recipe on a chilly evening when I needed something nourishing and quick. The aroma of mushrooms and garlic sautéing in the skillet immediately brought a sense of calm to my kitchen. This spinach mushroom casserole has since become my go to for potlucks and cozy family dinners, often served alongside my Cheesy Garlic Bliss Bread for dipping. It’s the kind of meal that turns an ordinary Tuesday into something special, much like my popular Sheet Pan Lasagna.
Why This Easy Chicken Bake is Irresistible
- Creamy Comfort: Every bite is enveloped in a rich, savory sauce that is incredibly satisfying.
- Effortless Preparation: With simple steps and common ingredients, this dish comes together quickly.
- Crowd-Pleasing Flavor: The combination of cheese, chicken, and vegetables is a guaranteed hit.
- Perfect for Meal Prep: This bake stores beautifully, making weekday lunches a breeze.
Ingredients for Your Perfect Chicken Spinach Mushroom Bake
Be sure to see the recipe card below for the full listing of ingredients, instructions, notes, and estimated nutritional information.
- Boneless, skinless chicken breasts: Provides lean protein and a tender texture.
- Cremini mushrooms: Offer a deeper, earthier flavor than white mushrooms.
- Frozen chopped spinach: Remember to thaw and thoroughly squeeze out excess water.
- Mozzarella and Parmesan cheese: Create that classic, irresistible cheesy baked chicken flavor.
- Sour cream and mayonnaise: Combine to form the rich, creamy base of the sauce.
- Fresh garlic: Adds essential aromatic depth to the entire dish.
Chicken Spinach Mushroom Bake
This easy chicken spinach mushroom bake is a creamy, cheesy comfort food dinner ready in just 60 minutes. Perfect for busy weeknights with simple ingredients.
Equipment
- oven
- baking dish
- large skillet
- cutting board
- knife
- mixing bowl
- measuring spoons
- measuring cups
Ingredients
- 1 pound boneless, skinless chicken breasts
- 1 tablespoon olive oil
- 1 teaspoon kosher salt divided
- 1/2 teaspoon black pepper divided
- 8 ounces cremini mushrooms sliced
- 1 package frozen chopped spinach 10 ounce, thawed and squeezed dry
- 1 cup shredded mozzarella cheese divided
- 1/2 cup shredded Parmesan cheese
- 1/2 cup sour cream at room temperature
- 1/3 cup mayonnaise
- 2 cloves garlic minced
Instructions
- Preheat your oven to 375°F. Lightly grease an 8×8-inch or similar 2-quart baking dish with nonstick cooking spray or a little olive oil.
- Season the chicken breasts on both sides with 1/2 teaspoon of the salt and 1/4 teaspoon of the black pepper. In a large skillet over medium-high heat, heat the olive oil. Add the chicken and cook for 5-6 minutes per side, until golden brown and cooked through. Transfer the chicken to a cutting board and let it rest for 5 minutes, then use two forks to shred it into bite-sized pieces.
- In the same skillet, add the sliced mushrooms. Cook over medium heat for 6-8 minutes, stirring occasionally, until the mushrooms have released their liquid and are browned. Stir in the minced garlic and cook for 1 more minute, just until fragrant. Remove the skillet from the heat.
- In a large mixing bowl, combine the shredded chicken, cooked mushrooms and garlic, squeezed-dry spinach, 1/2 cup of the mozzarella cheese, all of the Parmesan cheese, sour cream, mayonnaise, the remaining 1/2 teaspoon salt, and the remaining 1/4 teaspoon black pepper. Stir gently but thoroughly until the mixture is uniformly combined and creamy.
- Transfer the chicken and spinach mixture to your prepared baking dish, spreading it into an even layer. Sprinkle the remaining 1/2 cup of mozzarella cheese evenly over the top.
- Bake, uncovered, in the preheated oven for 20-25 minutes, until the cheese on top is melted, bubbly, and lightly browned in spots. Let the bake rest for 5-10 minutes before serving to allow it to set slightly for easier scooping.
Notes
Let the bake rest for 5-10 minutes before serving to allow it to set slightly for easier scooping.
Ways to Customize This Bake
- Extra Cheesy Version: Add a cup of shredded sharp cheddar cheese to the mixture.
- Protein Swap: Try using cooked, shredded turkey or even canned tuna.
- Gluten-Free Option: This recipe is naturally gluten-free, just check your labels.
My Pro Tips for a Flawless Bake
- Properly Dry Spinach: Squeezing the spinach completely prevents a watery casserole.
- Season in Layers: Season the chicken and the final mixture for balanced flavor.
- Golden Brown Mushrooms: Cook the mushrooms until they are nicely browned for the best taste.
- Let it Rest: Allowing the bake to sit for 5-10 minutes makes serving easier. For more one pan inspiration, check out my Stuffed Bell Peppers.
How to Store and Reheat Your Bake
- Store: Keep leftovers in an airtight container in the refrigerator for up to 4 days.
- Freeze: Freeze portions in freezer safe containers for up to 3 months. Thaw in the fridge overnight.
- Reheat: Warm individual servings in the microwave or the entire dish in a 350°F oven until hot.
- Make Ahead Tip: You can assemble the entire dish a day ahead, cover, and refrigerate before baking.
Frequently Asked Questions
Can I use fresh spinach instead of frozen in this chicken spinach mushroom bake?
Yes, you can substitute about 10 ounces of fresh spinach. Simply wilt it in the skillet after cooking the mushrooms, then squeeze out any excess liquid before adding it to the mixture. This ensures your creamy chicken bake doesn’t become watery.
How do I know when the chicken spinach mushroom bake is done?
The bake is ready when the cheese on top is melted, bubbly, and has some golden brown spots. The internal temperature should reach 165°F if you check with a thermometer. It will be hot and bubbly all the way through.
What can I serve with chicken spinach mushroom bake?
This dish pairs wonderfully with a simple side salad, crusty bread, or steamed rice. For a full comfort food meal, try it with my Garlic Parmesan Chicken Meatloaf for a different take on baked chicken.
Can I make this chicken spinach mushroom bake ahead of time?
Absolutely. Assemble the bake completely, cover it tightly, and refrigerate for up to 24 hours before baking. You may need to add a few extra minutes to the baking time since it will be going into the oven cold.
More Family Friendly Dinners to Try
Why This Chicken Spinach Mushroom Bake Will Become a Favorite
With its creamy texture and savory, cheesy flavor, this chicken spinach mushroom bake is the perfect solution for a stress free dinner. It’s easy enough for a weeknight but delicious enough for company. I hope it brings as much comfort to your table as it does to mine.
