Sauté and bake this delicious dinner dish for a crowd. In this video, learn how to make a creamy chicken, mushroom, and spinach skillet casserole using a homemade pasta sauce. The recipe starts by cooking diced onion, white mushroom, and garlic cloves over the stove. Into the same pan, the sauce comes together using whole milk, dijon mustard, parmesan, and all-purpose flour. Once the sauce is made, pour in the cooked chicken, pasta, spinach, and mushrooms before baking in the oven for around 15 minutes. It’s an easy, flavorful dish that’s packed with protein and that the whole family will enjoy.