Creamed Chicken and Biscuits Casserole

Ingredients
1 ½ tsp butter
1 small onion, chopped
2 pounds of cooked chicken, cut or shredded
1 can of cream of chicken soup
½ cup mayonnaise
1 cup of milk
½ cup roasted red pepper, chopped
1 ½ cup cheddar cheese, mild
1 can refrigerated biscuit dough
How To Make Creamed Chicken and Biscuits Casserole
FIRST STEP:
Preheat the oven to 350*

Grease the bottom and the sides of a baking dish