you can just put pesto on a sandwich! you can put pesto on a sandwich unsupervised in the privacy of your own home! you don't even gotta go to a certified sandwich facility and have a licensed professional put pesto on a sandwich for you or aaaaaaaaaaaanything!
anyway i have now twicein a row had an egg, pesto, and hot pepper flakes on what the grocery store called "french bread" but which i'm fairly sure france would disclaim any association with
it was pretty good!