Description

Chicken Spinach & Mushroom Low-Carb Oven Dish is a comforting, protein-rich casserole that combines tender chicken breasts, sautéed mushrooms, nutritious spinach, and a creamy, cheesy sauce. This oven-baked meal delivers plenty of flavor while keeping carbohydrates to a minimum.

It’s an excellent option for anyone following a low-carb, keto, gluten-free, or high-protein eating plan. The combination of chicken, vegetables, and cheese creates a balanced dish that’s satisfying enough to serve as a complete meal.

Recipe Information

Ingredients

For the Chicken

• 2 pounds (900 g) boneless, skinless chicken breasts
• 1 teaspoon salt
• ½ teaspoon black pepper
• 1 teaspoon garlic powder
• 1 teaspoon Italian seasoning
• 1 tablespoon olive oil

For the Vegetable Mixture

• 8 ounces (225 g) mushrooms, sliced
• 5 ounces (140 g) fresh spinach
• 3 cloves garlic, minced
• 1 tablespoon butter

For the Cream Sauce

• 4 ounces (115 g) cream cheese, softened
• ½ cup heavy cream
• 1 cup shredded mozzarella cheese
• ¼ cup grated Parmesan cheese
• ½ teaspoon onion powder
• ¼ teaspoon red pepper flakes (optional)

Instructions

Step 1: Prepare the Oven

• Preheat the oven to 375°F (190°C).
• Lightly grease a 9 × 13-inch baking dish.

Step 2: Season the Chicken

• Pat the chicken dry.
• Season both sides with salt, pepper, garlic powder, and Italian seasoning.

Step 3: Brown the Chicken

• Heat olive oil in a large skillet over medium-high heat.
• Sear the chicken for 3 minutes on each side.
• Transfer the chicken to the prepared baking dish.

Step 4: Cook the Mushrooms and Spinach

• Melt the butter in the same skillet.
• Add the mushrooms and cook for 5 minutes.
• Stir in the minced garlic and cook for 30 seconds.
• Add the spinach and cook until wilted.

Step 5: Make the Sauce

• Reduce the heat to medium-low.
• Add the cream cheese and heavy cream.
• Stir continuously until smooth.
• Add the mozzarella, Parmesan, onion powder, and red pepper flakes.
• Continue stirring until the cheese melts completely.

Step 6: Assemble the Dish

• Spread the spinach and mushroom mixture evenly over the chicken.
• Pour the creamy cheese sauce over the top.

Step 7: Bake

• Bake for 25-30 minutes.
• The chicken should reach an internal temperature of 165°F (74°C).

Step 8: Serve

• Allow the casserole to rest for 5 minutes.
• Serve hot.

Chef’s Notes

• Chicken thighs can replace chicken breasts for a juicier result.
• Baby bella mushrooms provide a deeper flavor than white button mushrooms.
• Fresh spinach is preferred, but frozen spinach may be substituted if thoroughly drained.
• Rotisserie chicken can reduce preparation time.

Helpful Tips

Avoid Watery Sauce

Cook the mushrooms until their moisture evaporates before adding the spinach.

Prevent Dry Chicken

Avoid overbaking. Use a meat thermometer for the most accurate results.

Make It Extra Creamy

Increase the cream cheese to 6 ounces.

Add More Flavor

Try adding:

• Fresh thyme
• Fresh basil
• Paprika
• Crushed rosemary

Serving Suggestions

Serve with:

• Cauliflower rice
• Roasted broccoli
• Zucchini noodles
• Green beans
• A simple garden salad

Nutritional Information (Per Serving)

Values are estimates and may vary depending on the ingredients used.

Health Benefits

High in Protein

Chicken provides complete protein that supports muscle growth, tissue repair, and satiety.

Rich in Vitamins and Minerals

Spinach contains:

• Vitamin A
• Vitamin C
• Vitamin K
• Iron
• Magnesium

Supports Weight Management

The high protein and low carbohydrate content may help reduce hunger and improve fullness.

Good Source of Antioxidants

Mushrooms contain antioxidants that may help protect cells from oxidative stress.

Lower Blood Sugar Impact

With only 4 grams of net carbohydrates per serving, this dish may be suitable for people following a low-carb lifestyle.

Frequently Asked Questions

Can I prepare this dish ahead of time?

Yes. Assemble the casserole up to 24 hours in advance and refrigerate it until ready to bake.

Can I freeze it?

Yes. Freeze it in an airtight container for up to 3 months.

Can I use frozen spinach?

Absolutely. Thaw it completely and squeeze out as much liquid as possible before using it.

How do I store leftovers?

Store leftovers in an airtight container in the refrigerator for up to 4 days.

Can I make it dairy-free?

Yes. Replace the cream cheese, heavy cream, and cheeses with dairy-free alternatives.

Is this recipe keto-friendly?

Yes. The low net carbohydrate content makes it suitable for most ketogenic eating plans.

Recipe Summary

• Easy one-pan meal
• Family-friendly
• Keto-friendly
• High in protein
• Rich in nutrients
• Ready in under 1 hour
• Perfect for meal preparation and leftovers