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 spaghetti in chicken broth.,Saute onion and peppers in margarine.,Add cheese, which has been cut in small pieces, to spaghetti, onion and peppers while hot.,Stir in Ro-Tel.,______,Makes a very large batch.,May be frozen before baking step.
Mix well. Bake at 300 for 35 to 45 minutes.