Wash the fresh berries, remove the stem, and slice them into ¼ inch thin slices. Alternatively, you can also mash them with a fork in a bowl.
Make the sandwich:
Spread the peanut butter on both slices of bread. Place the strawberry slices on one side and close the sandwich.
Pack it for school:
Pack this sandwich for school inside its own compartment of a lunchbox. In another compartment or container, pack fruit, veggies, and your favorite sides. Add an ice pack in the lunch bag if necessary.