What is the best low carb casserole with chicken and spinach?

The best low carb casserole with chicken and spinach combines tender chicken breasts, sautéed mushrooms, baby spinach, and a creamy cheese sauce. Baked until bubbly and golden, it’s keto-friendly, high in protein, and incredibly satisfying.

Can I make chicken spinach mushroom casserole ahead of time?

Yes! You can assemble the chicken spinach mushroom casserole up to 24 hours in advance. Cover and refrigerate it, then bake when you're ready. It's a great option for meal prep or busy weeknights.

Is chicken spinach mushroom casserole keto-friendly?

Absolutely. This casserole is perfect for a keto diet, with just 4g net carbs per serving. It’s made with low-carb ingredients like chicken, spinach, mushrooms, cream cheese, and shredded mozzarella.

What cheese works best in a low carb chicken casserole?

Mozzarella cheese works well for its meltability, but you can also use provolone, Monterey Jack, or a combination of cheeses. A sprinkle of Parmesan adds great flavor to the topping.

How long does low carb chicken spinach casserole last in the fridge?

Stored in an airtight container, this low carb casserole will stay fresh in the fridge for up to 4 days. Reheat in the oven or microwave until heated through.

Chicken Spinach Mushroom Low Carb Casserole

Description

A creamy, low-carb chicken casserole packed with spinach, mushrooms, and melted mozzarella cheese. Perfect for keto, meal prep, or a comforting weeknight dinner.

Ingredients

Scale

6 thin-sliced chicken breasts
1 container (8 oz) green onion cream cheese
1/4 cup olive oil
1/2 cup chicken broth
1 large package of sliced mushrooms
1 small bag of fresh baby spinach
1 dash Weber Herb and Garlic Seasoning
8 oz shredded mozzarella cheese
Salt and pepper to taste

Instructions

Preheat oven to 375°F (190°C) and grease a 9×13” baking dish.
Arrange chicken breasts in a single layer in the dish. Season with salt, pepper, and garlic herb seasoning.
In a skillet, sauté mushrooms in a little olive oil until softened. Stir in spinach just until wilted.
In a bowl, mix cream cheese, olive oil, and chicken broth until smooth. Pour sauce over chicken, mushrooms, and spinach.
Cover dish loosely with foil and bake for 20 minutes.
Remove foil and bake for another 20 minutes.
Top with shredded mozzarella and bake 5–10 minutes more, until cheese is melted and bubbly.
Let rest 5 minutes before serving.

Notes

Use thin-sliced chicken to ensure even cooking.
Spinach only needs a quick wilt — don’t overcook.
Soften cream cheese before mixing for easier blending.
Add red pepper flakes for a spicy kick.
Try different cheeses like provolone or cheddar for variation.

Prep Time: 10 minutes
Cook Time: 50 minutes
Category: Dinner
Method: Baking
Cuisine: American

Nutrition

Serving Size: 1 portion
Calories: 430
Sugar: 2g
Sodium: 480mg
Fat: 28g
Saturated Fat: 10g
Unsaturated Fat: 16g
Trans Fat: 0g
Carbohydrates: 5g
Fiber: 1g
Protein: 38g
Cholesterol: 105mg