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.

Heat pita bread in low heated oven.,grill or (dry fry in non stick frying pan)beef patties until cooked thru,.,fry onion.,take pita bread out of oven.,arrange patties,cheese,lettuce,onion,tomato,and tomato chutney,on top of a pita bread,.,______,and enjoy!
roll pita bread up.