Freezing tuna sandwiches is an easy way to prepare your lunch weeks in advance. The steps are simple, and once you get the hang of it, you can prepare a large number at a time. Better still, the cost of preparing your own sandwich can save you money. To freeze a tuna sandwich, all you need is a few simple ingredients and some time.

Prepare your tuna sandwich. First, decide on an ingredient list; you may want to adjust your recipe to include things that freeze well. For a tuna sandwich, skip mayonnaise, lettuce and hard boiled eggs, as they lose their quality when frozen; for best results, opt instead for a simple tuna sandwich with a salad dressing.

Place the tuna sandwich in a sandwich-sized baggie that includes a zip top. If you are going to label the baggies, do so before you put the sandwiches inside to avoid puncturing the bag or squishing your sandwich. Try make sure that all the air is out of the baggie before you seal it, as the sandwich will remain fresher if the air is gone prior to freezing.

If you are making multiple sandwiches, stack them neatly and then place them into another, larger bag for additional protection. Once again, make sure to get all of the air out. If you are making a single sandwich, you can either place it in another small baggie or wrap it neatly in tin foil. Place your sandwich in the freezer.