Preheat your oven to 350 degrees.
Line a cookie sheet with parchment paper. Lay the butter snaps out into rows, leaving space between the pretzels to prevent them from melting together.
Add a peppermint kiss to the top of each pretzel.
Put the cookie sheet into the oven for 3-5 minutes. The kisses should get warm, but you should take them out before they start melting and losing their shape.
Remove the sheet from the oven and immediately press green M&Ms into the kisses.
Before removing from the tray, allow the bites to harden. It helps to put them into the refrigerator for 20 minutes or so.