Low carb chicken spinach mushroom

Golden bubbly low carb chicken spinach mushroom bake fresh from the oven with melted mozzarella Save
Golden bubbly low carb chicken spinach mushroom bake fresh from the oven with melted mozzarella | cookingwithavery.com

This creamy casserole features juicy chicken breasts nestled in a bed of sautéed mushrooms and wilted spinach, all smothered in a rich cheese sauce made with cream cheese, heavy cream, Parmesan, and mozzarella. The entire dish comes together in just 55 minutes, with only 20 minutes of active prep time.

The finished bake delivers tender, flavorful chicken with a golden bubbly cheese topping. Each serving contains just 7 grams of carbohydrates while packing 46 grams of protein, making it an ideal option for those following low-carb or gluten-free eating patterns.

The dish reheats beautifully and can be assembled up to 24 hours in advance, making it perfect for meal prep or busy weeknights when you want something comforting without spending hours in the kitchen.

The kitchen was quiet except for the gentle sizzle of mushrooms releasing their moisture into the pan. I was experimenting with low-carb cooking, trying to make something that felt indulgent without the pasta or bread I usually relied on. When that creamy, cheesy sauce came together and I took that first bite, I honestly forgot I was eating something diet-friendly. This bake has become my go-to whenever I want comfort food that actually loves me back.

Last winter, my sister came over looking completely exhausted from work. I made this chicken bake while she curled up on the couch with a glass of wine. The smell of garlic and melting cheese filled the apartment, and by the time we sat down to eat, she was actually smiling. Sometimes food is just what someone needs to remember that life is good.

Ingredients

  • Chicken breasts: Boneless and skinless work best here, and pounding them slightly ensures even cooking
  • Olive oil: Creates a beautiful golden sear that adds depth to the final dish
  • Fresh spinach: Wilts down beautifully in the cream sauce, adding nutrients without overpowering
  • Mushrooms: Cremini have more flavor than white buttons, but either will work wonderfully
  • Garlic and onion: The aromatic foundation that makes the whole house smell amazing
  • Heavy cream: Essential for that luxurious, velvety sauce texture
  • Cream cheese: Must be softened to prevent any lumps in your sauce
  • Parmesan: Adds that salty, umami punch that makes everything taste better
  • Mozzarella: Divided use ensures some melts into the sauce and some creates that golden top
  • Italian herbs: Dried work perfectly here and blend seamlessly into the cream
  • Fresh nutmeg: Just a pinch elevates the cream sauce in ways you would not expect
  • Fresh parsley: A bright pop of color that makes the dish look finished and inviting

Instructions

Get your oven ready:
Preheat to 200°C (400°F) and give your baking dish a light coating of oil so nothing sticks later.
Sear the chicken:
Season the chicken generously with salt and pepper, then sear in hot olive oil for 3-4 minutes per side until golden and fragrant.
Build the vegetable base:
Cook onions and mushrooms until they have softened and released all their moisture, then add garlic for just one minute.
Wilt the spinach:
Toss in the chopped spinach and stir for 1-2 minutes until it has collapsed but still has some structure.
Create the creamy sauce:
Lower the heat and stir in cream cheese and heavy cream until completely smooth, then fold in the Parmesan and half the mozzarella.
Season and assemble:
Add the Italian herbs and nutmeg, taste for salt and pepper, then spread the mixture in your baking dish and nestle the chicken on top.
Add the cheesy topping:
Spoon a little sauce over each piece of chicken, then scatter the remaining mozzarella across everything.
Bake until bubbly:
Cook for 20-25 minutes until the chicken reaches 74°C (165°F) and the cheese has turned golden in spots.
Rest and serve:
Let the dish sit for 5 minutes before serving, which helps the sauce set slightly and makes serving much easier.
Creamy low carb chicken spinach mushroom bake featuring tender breast pieces in rich cheesy sauce Save
Creamy low carb chicken spinach mushroom bake featuring tender breast pieces in rich cheesy sauce | cookingwithavery.com

This recipe saved me during a month when I was trying to reduce carbs but still needed to feel satisfied after dinner. My husband actually asked if we could have it every week, which is basically the highest compliment he can give a meal. There is something about the combination of tender chicken and that velvety sauce that feels like a warm hug on a plate.

Make It Your Own

Sometimes I add a pinch of red pepper flakes to the sauce when I want a little warmth that cuts through the richness. You could also swap the mozzarella for provolone if you want a sharper cheese flavor, or use turkey breast instead of chicken for a lighter version. The beauty of this dish is how forgiving it is.

Perfect Pairings

A crisp green salad with a bright vinaigrette balances the creaminess perfectly. Roasted low-carb vegetables like cauliflower or broccoli also work wonderfully alongside. On nights when I am not being strict about carbs, I have even served it over mashed cauliflower for extra comfort.

Make Ahead Magic

You can assemble everything up to 24 hours before baking, which makes this perfect for dinner parties or busy weeknights. Just cover and refrigerate, then add a few extra minutes to the baking time if it is coming straight from the fridge.

  • Let the dish come to room temperature for about 20 minutes before baking
  • Cover with foil for the first 15 minutes if baking from cold
  • The flavors actually develop and meld even better when made ahead
Baked low carb chicken spinach mushroom casserole topped with golden brown cheese and fresh parsley garnish Save
Baked low carb chicken spinach mushroom casserole topped with golden brown cheese and fresh parsley garnish | cookingwithavery.com

There is something deeply satisfying about serving a dish that tastes indulgent but is actually working with your health goals. Enjoy every creamy, cheesy bite.

Recipe FAQs

Yes, you can assemble the entire dish up to 24 hours before baking. Cover tightly with plastic wrap and refrigerate. When ready to bake, remove from the refrigerator while the oven preheats, then bake as directed. You may need to add a few extra minutes if baking cold from the refrigerator.

Kale, Swiss chard, or broccoli all work well as spinach substitutes. Keep in mind that heartier greens like kale may need a few extra minutes to wilt. Frozen spinach can also be used—thaw and squeeze out excess moisture before adding to the sauce.

Absolutely. Boneless, skinless chicken thighs work excellently in this dish and often remain more moist during baking. Adjust cooking time as needed—thighs typically require 25-30 minutes in the oven versus 20-25 minutes for breasts.

Store leftovers in an airtight container in the refrigerator for 3-4 days. Reheat individual portions in the microwave at 50% power to prevent the sauce from separating, or warm the entire dish in a 180°C (350°F) oven until heated through.

You can freeze the assembled, unbaked dish for up to 3 months. Thaw overnight in the refrigerator before baking. Already-baked portions can be frozen for 2-3 months, though the texture may become slightly grainy due to the cream sauce.

Low carb chicken spinach mushroom

Tender chicken breasts baked with mushrooms, spinach, and a rich creamy cheese sauce. Low carb, gluten-free, and perfect for easy weeknight dinners.

Prep 20m
Cook 35m
Total 55m
Servings 4
Difficulty Easy

Ingredients

Chicken

  • 4 boneless, skinless chicken breasts (about 1.3 lbs total)
  • 1 tablespoon olive oil
  • 1/2 teaspoon salt
  • 1/2 teaspoon black pepper

Vegetables

  • 7 oz fresh spinach, roughly chopped
  • 9 oz cremini or white mushrooms, sliced
  • 2 cloves garlic, minced
  • 1 small yellow onion, finely chopped

Sauce

  • 1/2 cup heavy cream
  • 1/2 cup cream cheese, softened
  • 1/2 cup grated Parmesan cheese
  • 1 cup shredded mozzarella cheese, divided
  • 1 teaspoon dried Italian herbs
  • 1/4 teaspoon ground nutmeg

Optional Garnish

  • Fresh parsley, chopped

Instructions

1
Preheat Oven: Preheat the oven to 400°F. Lightly grease a 9 x 13-inch baking dish.
2
Sear Chicken: Season the chicken breasts with salt and black pepper. In a large skillet, heat olive oil over medium-high heat. Sear the chicken on both sides until golden, about 3-4 minutes per side. Transfer to a plate.
3
Sauté Vegetables: In the same skillet, add onion and mushrooms. Sauté for 4-5 minutes until softened and mushrooms have released their moisture.
4
Add Garlic and Spinach: Add garlic and cook for 1 minute. Stir in the spinach and cook until just wilted, about 1-2 minutes.
5
Prepare Cream Sauce: Reduce heat to low. Add cream cheese and heavy cream, stirring until smooth. Mix in Parmesan, half of the mozzarella, Italian herbs, and nutmeg. Adjust salt and pepper to taste. Remove from heat.
6
Assemble Dish: Spread the spinach-mushroom mixture in the bottom of the prepared baking dish. Nestle the seared chicken breasts on top. Spoon a little sauce over each chicken piece.
7
Add Cheese Topping: Sprinkle remaining mozzarella over the top.
8
Bake: Bake uncovered for 20-25 minutes, or until the chicken is cooked through (internal temperature 165°F) and cheese is bubbly and golden.
9
Rest and Serve: Garnish with fresh parsley if desired. Let rest 5 minutes before serving.
Additional Information

Equipment Needed

  • Large skillet
  • 9 x 13-inch baking dish
  • Sharp knife
  • Cutting board
  • Measuring cups and spoons

Nutrition (Per Serving)

Calories 435
Protein 46g
Carbs 7g
Fat 25g

Allergy Information

  • Contains dairy (cream, cream cheese, Parmesan, mozzarella)
  • Contains milk
  • Gluten-free, but always check labels on cheese and cream if highly sensitive
Avery Mitchell

Passionate home cook sharing easy recipes, cooking tips, and meal ideas for food lovers.