Things You'll Need:
- Butter
- 2 cans french cut greenbeans - well drained
- 1 can mushrooms
- 1/2 of a yellow onion sliced very thin and separated into rings
- 2 stalks of celery, sliced small
- 2 tablespoon butter
- 1/2 cup heavy cream
- 1/4 cup mayonnaise
- 1 cup shredded cheese, any type
- 3/4 teaspoon salt
- 1/2 teaspoon pepper
- 1/2 teaspoon garlic powder
- 5 small boneless chicken breasts
- Knife
- Cutting board
- Glass casserole dish
- Spoon
- Non-stick cooking spray
- Skillet
- Wooden spatula
- Aluminum foil
- Large mixing bowl
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Step 1
Preheat the oven to 350 degrees Fahrenheit.
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Step 2
Cut the chicken into bite-sized chunks. This will cut down on cooking time and make the casserole easier to serve and save if you have leftovers.
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Step 3
Chicken is still slightly pink, which means it is ready for a casserole but should not be eaten yet.Brown the chicken. Use a small amount of butter and brown the chicken until it is almost cooked. The centers should still be pink. It is not safe to eat the chicken at this stage.
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Step 4
Spray the casserole dish with non-stick cooking spray. This will prevent the chicken pieces from sticking to the bottom of the casserole dish.
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Step 5
Making a very large casserole, you may wish to use entire chicken breasts. The casserole in this picture would feed 12 to 20 people.Spread the pieces of chicken out over the bottom of the casserole dish. They should cover the bottom of the dish evenly. Make sure that there are no "holes" where the casserole will not have any chicken.
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Step 6
Saute the onions, celery and mushrooms. When the vegetables are tender, they are ready to be added to the casserole.
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Step 7
Mix the cooked vegetables, salt, pepper, cream, mayonnaise, green beans and cheese together. Use the large mixing bowl and stir them until they form a creamy mixture.
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Step 8
Pour the mixture over the chicken pieces. Spread it evenly so that all of the chicken is covered.
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Step 9
Cover the dish with aluminum foil. Make sure that you do not leave any parts uncovered or the casserole will dry out while it is baking.
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Step 10
Bake for 30-40 minutes. If you wish, you can uncover it for the last ten minutes in order to brown the top of the casserole.















