Creamed Chicken & Biscuits

1/2 large onion, chopped
1 1/2 tsp. butter
4 cups chopped, cooked chicken
1 (10 3/4 oz.) can cream of chicken soup
1 cup sour cream
1/2 cup milk
1/2 cup chopped pimiento
1 cup shredded Cheddar cheese, divided
6 biscuits (you can use canned or unthawed frozen ones)

Preheat oven to 350 degrees. Grease the bottom and sides of an 11x7-inch baking dish. Heat butter in a small non-stick skillet oer medium-high heat until melted. Stir in onion. Saute until tender. Combine onion, chicken, soup, sour cream, milk and pimiento in a medium bowl and mix well. Spoon mixture into prepared baking dish. Bake for 15 minutes. Remove from oven. Sprinkle baked layer with 3/4 cup of the Cheddar. Arrange biscuits in a single layer over top. Sprinkle with remaining Cheddar. Bake until biscuits are golden brown and the sauce is bubbly, approximately 20 minutes. Serve immediately. Enjoy!