Very easy to make.
Fresh tomatoes, fresh basil, fresh mozzarella. Slice tomatoes and mozzarella 1/4″ thick, layer in alternate layers on a serving dish. Chiffonade basil (cut into thin strips) and scatter over. True caprese only has olive oil as a dressing. I recommend a nice balsamic to be drizzled over as well, and some cracked black pepper. Serve as an appetizer for lunch or dinner.