3 c. shredded cheddar cheese
1 1/2 c. cut up cooked chicken
2/3 c. chopped onion
1 (10 oz.) pkg. frozen chopped broccoli
1 1/3 c. milk
3 eggs
3/4 tsp. salt
1/4 tsp. pepper
3/4 c. Bisquick

Mix all ingredients, save some cheese for top of casserole. Place in oiled baking dish. Cook 35 minutes or until knife inserted comes out clean. Place remaining cheese and let melt. 6-8 servings.