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Baked low-carb chicken dish with spinach and mushrooms in a creamy sauce served in a casserole dish.

Easy 40-Minute Chicken, Spinach & Mushroom Low-Carb Bake – So Satisfying!


  • Author: Sylvia
  • Total Time: 50 minutes
  • Yield: 6 servings 1x
  • Diet: Gluten Free

Description

This Chicken, Spinach, and Mushroom Low-Carb Oven Dish is creamy, cheesy comfort food you can feel great about! Tender chicken, garlicky sautéed mushrooms, and fresh spinach are baked to bubbly perfection in a rich, low-carb cream sauce. Keto-friendly, family-approved, and ready in under an hour—perfect for busy weeknights or cozy Sunday suppers.


Ingredients

Scale
  • 1.5 pounds boneless skinless chicken breasts or thighs

  • 8 ounces fresh mushrooms (button, cremini, or shiitake), sliced

  • 5 ounces fresh baby spinach

  • 1 small yellow onion, diced

  • 3 cloves garlic, minced

  • 1 cup heavy cream (or coconut cream for dairy-free)

  • 1½ cups shredded mozzarella cheese (or cheese of choice)

  • ¼ cup grated Parmesan cheese (optional, for topping)

  • 2 tablespoons olive oil or butter

  • 1 teaspoon salt

  • ½ teaspoon black pepper

  • ¼ teaspoon red pepper flakes (optional, for spice)


Instructions

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

  • In a large skillet, heat olive oil or butter over medium-high heat. Sear chicken on both sides (2–3 minutes per side) until golden. Set aside.

  • In the same skillet, add onion and garlic. Sauté for 1–2 minutes until fragrant.

  • Add mushrooms and cook until browned and moisture has mostly evaporated, about 5–6 minutes.

  • Stir in spinach and cook just until wilted.

  • Pour in the heavy cream and stir to combine. Simmer for 1–2 minutes. If desired, stir in a handful of shredded cheese to thicken.

  • Transfer the mushroom-spinach mixture to the baking dish. Arrange seared chicken over the top. Pour cream sauce evenly over the chicken.

  • Sprinkle with remaining mozzarella and optional Parmesan cheese.

  • Bake uncovered for 25–30 minutes or until bubbly and chicken reaches 165°F (74°C).

  • Let rest for 5 minutes before serving. Garnish with herbs or extra cheese, if desired.

Notes

  • Cheese Variations: Try provolone, gouda, or sharp cheddar for a different flavor profile.

  • Low-Moisture Tip: Always sauté mushrooms and spinach thoroughly to reduce moisture before baking.

  • Dairy-Free Option: Use coconut cream and a dairy-free shredded cheese alternative.

  • Make Ahead: Assemble up to 24 hours in advance, refrigerate, and bake fresh.

  • Freezer-Friendly: Assemble (unbaked), wrap tightly, and freeze. Thaw overnight in the fridge before baking.

Equipment

  • 9×13-inch oven-safe baking dish

  • Large skillet

  • Wooden spoon

  • Sharp knife

  • Cutting board

  • Measuring cups and spoons

  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Category: Dinner
  • Method: Oven-Baked, Sautéed
  • Cuisine: American, Keto-Friendly, Low-Carb

Nutrition

  • Serving Size: 1 portion (1/6 of recipe)
  • Calories: 420 kcal
  • Sugar: 2g
  • Sodium: 510mg
  • Fat: 28g
  • Saturated Fat: 14g
  • Unsaturated Fat: 12g
  • Trans Fat: 0g
  • Carbohydrates: 6g
  • Fiber: 2g
  • Protein: 36g
  • Cholesterol: 125mg

Keywords: chicken spinach mushroom bake, low-carb chicken dinner, keto oven chicken, creamy chicken casserole, gluten-free chicken dish, weeknight chicken recipe