Instructions: Place potatoes in a greased 9x13 inch pan. Season with salt and pepper. Melt butter in the microwave. In a bowl, add minced onions, sour cream, cream of chicken soup, and melted butter and mix together. Pour soup mixture over potatoes; sprinkle with cheese. Bake at 350 degrees for 45 minutes, or until all is completely warm, and the cheese begins to melt.