You will be given a definition of a task first, then some input of the task.
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.

Line 13x9 pan with enough foil to overhang long sides by 2''.,In large microwave-safe bowl, microwave semisweet chocolate chips on high 1-2 minutes or until melted.,Stir in pretzels and nuts.,Spread in pan.,In small microwave-safe bowl, microwave the white chips until melted.,Transfer to plastic food storage bag; snip tiny hole from 1 corner.,Pipe over bark in pan.,Sprinkle with nonpareils.,Chill 1 hour or until firm.,Using foil, lift bark from pan;discard foil.,______,I suppose you can add anything you'd like.M&M's, Crushed Heath Bars, marshmallows, etc. Add to the chocolate what your heart desires.
Output:
Break into pieces and keep chilled.