This hearty Broccoli Chicken Casserole is made with pasta, tender chicken, and broccoli, all enveloped in a delicious creamy cheddar mushroom sauce. It's a satisfying dish that's perfect for a family meal.
1: Heat oven to 400°F.
2: Cook pasta in a stockpot of boiling salted water until al dente, adding broccoli about 1 minute before pasta is done.
3: Drain pasta and broccoli, and set aside.
4: Heat butter or oil in a sauté pan over medium-high heat and add the onion, sautéing for 3 minutes.
5: Add mushrooms and garlic, sautéing for 5 more minutes until mushrooms are cooked through.
6: Sprinkle flour over the onion mixture, stirring until combined and cooking for 1 minute.
7: Add stock, stirring until most clumps are gone.
8: Mix in milk, Dijon, salt, and pepper, bringing the sauce to a simmer.
9: Remove from heat and stir in 1 cup of shredded cheese until combined; season with additional salt and pepper if needed.
10: In a baking dish, combine pasta, broccoli, mushroom sauce, and chicken, tossing until combined.
11: Smooth casserole into an even layer, and bake uncovered for 15 minutes.
12: Sprinkle remaining cheddar cheese on top and bake for an additional 10 minutes.
