Given the task definition and input, reply with output. In this task, you will be presented with the directions of a recipe separated by "," and have to fill in the "___" which is a step that is missing from the recipe.

Cook and thoroughly drain potatoes.,In mixer, whip cream cheese and half and half.,Slowly add potatoes.,Whip and add butter and seasonings.,______,Can be made several days ahead and stored in refrigerator until 30 minutes before serving time.
Place in casserole and bake at 350 for 30 minutes.