Creamy Chicken, Mushroom & Spinach Skillet Casserole


This spinach-packed casserole cooks on the stovetop and bakes in the same skillet for a family-friendly dinner with an easy cleanup. You can use leftover chicken and cook the pasta ahead of time to speed up the prep.

a recipe photo of the Creamy Chicken, Mushroom & Spinach Skillet Casserole served in a dish
Photo: Photographer: Rachel Marek, Food stylist: Annie Probst
Active Time:
35 mins
Total Time:
50 mins


  • 6 ounces whole-wheat pasta, such as rotini or elbows

  • 3 tablespoons extra-virgin olive oil, divided

  • 1 small onion, chopped

  • 8 ounces white mushrooms, halved if large, sliced

  • ½ teaspoon salt, divided

  • ½ teaspoon ground pepper, divided

  • 2 cloves garlic, minced

  • 2 tablespoons all-purpose flour

  • 1 ½ cups whole milk

  • 1 teaspoon Dijon mustard

  • ¾ cup grated Parmesan cheese, divided

  • 2 cups chopped or shredded cooked chicken

  • 1 (10 ounce) package frozen chopped spinach, thawed and squeezed dry


  1. Preheat oven to 400°F.

  2. Bring a large pot of water to a boil. Add pasta and cook according to package directions. Drain and set aside.

  3. Meanwhile, heat 2 tablespoons oil in a large ovenproof skillet over medium heat. Add onion; cook, stirring, until softened, about 2 minutes. Add mushrooms and 1/4 teaspoon each salt and pepper; cook, stirring, until softened, 4 to 6 minutes. Add garlic; cook, stirring, for 1 minute. Transfer the mixture to a large bowl.

  4. Add the remaining 1 tablespoon oil to the pan. Sprinkle in flour; cook, stirring, for 1 minute. Gradually add milk and mustard; cook, whisking constantly until the sauce thickens, 2 to 3 minutes. Remove from heat and stir in 1/2 cup Parmesan and the remaining 1/4 teaspoon each salt and pepper. Add the pasta, chicken, spinach and the mushroom mixture. Stir until well coated. Smooth the top and sprinkle with the remaining 1/4 cup Parmesan.

  5. Bake until bubbling, about 15 minutes.

Nutrition Facts (per serving)

337 Calories
14g Fat
34g Carbs
20g Protein
Nutrition Facts
Servings Per Recipe 6
Serving Size 1 cup
Calories 337
% Daily Value *
Total Carbohydrate 34g 12%
Dietary Fiber 5g 18%
Total Sugars 5g
Protein 20g 40%
Total Fat 14g 18%
Saturated Fat 4g 20%
Cholesterol 36mg 12%
Vitamin A 5746IU 115%
Vitamin C 5mg 6%
Vitamin D 37IU 9%
Vitamin E 3mg 18%
Folate 106mcg 27%
Vitamin K 177mcg 148%
Sodium 479mg 21%
Calcium 236mg 18%
Iron 3mg 17%
Magnesium 100mg 24%
Potassium 542mg 12%
Zinc 2mg 18%
Vitamin B12 1mcg 42%

Nutrition information is calculated by a registered dietitian using an ingredient database but should be considered an estimate.

* Daily Values (DVs) are the recommended amounts of nutrients to consume each day. Percent Daily Value (%DV) found on nutrition labels tells you how much a serving of a particular food or recipe contributes to each of those total recommended amounts. Per the Food and Drug Administration (FDA), the daily value is based on a standard 2,000 calorie diet. Depending on your calorie needs or if you have a health condition, you may need more or less of particular nutrients. (For example, it’s recommended that people following a heart-healthy diet eat less sodium on a daily basis compared to those following a standard diet.)

(-) Information is not currently available for this nutrient. If you are following a special diet for medical reasons, be sure to consult with your primary care provider or a registered dietitian to better understand your personal nutrition needs.

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