This Chicken Broccoli Potato Casserole is the perfect blend of hearty and comforting, with tender chicken, hearty potatoes, and fresh broccoli all wrapped in a creamy, cheesy sauce. It’s quick and easy to make, with minimal prep and just one dish, making it ideal for busy weeknights. Delicious, family-friendly, and simple—this casserole is sure to become a go-to favorite!
Prep Time 12 minutesminutes
Cook Time 1 hourhour25 minutesminutes
Resting Time 10 minutesminutes
Total Time 1 hourhour47 minutesminutes
Servings 6servings
Author Carrie Tyler
Ingredients
1poundChicken Breasts, boneless, skinless
2poundsYukon Gold Potatoesabout 6 potatoes
3cupsBroccoli floretsabout 2 small heads of broccoli
1cupOnion, diced
2clovesGarlic, minced
2teaspoonsOlive Oil
½cupAll Purpose Flour
½cupButter, salted1 stick
1cupMilk
1 ½cupChicken broth or chicken stockor vegetable or beef broth or stock
8ozSour Cream
2teaspoonFresh or Dried Oregano
1teaspoonSalt
1teaspoonFresh Ground Pepper
1cupShredded Cheddaror any mix of cheddar, jack, mozzarella
Instructions
Prep-Ahead Steps
Finely dice the onion. Mince the garlic.
Cut the chicken breasts up into bite-size cubes. Add the chicken to a 9×13 or similar size casserole dish. Then season with salt and pepper.
Clean the skins of the potatoes and then dice the potatoes into ½ inch cubes. Add to the casserole dish and season with salt and pepper. Cut the broccoli florets if needed and add to the casserole as well.
Cooking Steps
Preheat oven to 400 F degrees.
In preheated large frying pan or skillet over medium heat, add the olive oil, diced onions and garlic, stir to combine. Cook for about 5 minutes until the onions are translucent.
Turn the heat to Medium-LOW. Add the butter and stir to melt. Add the flour and whisk to combine with the butter and onions/garlic. Cook stirring constantly for about 1 minute, then slowly whisk in the broth and then milk until the roux is completely and smoothly mixed into the liquids. Turn the heat to Medium and continue to stir and cook until it comes to a light simmer and thickens. Turn off the heat.
Whisk in the cheese, oregano, salt, and pepper to the thickened sauce. Once the cheese is melted and fully incorporated, mix in the sour cream. Then pour the sauce over the potatoes, chicken, and broccoli. Add the shredded cheese and then mix to combine everything together.
Bake in the oven center rack for 60 minutes covered with aluminum foil, stirring the casserole halfway at 30 minutes to ensure even potato cooking. Remove the cover and bake for another 10 minutes until the potatoes are fork tender (OPTIONAL: Add shredded cheese to the top for the final 10 minutes of cooking). LET REST for 10 minutes. Serve and enjoy!