Preheat oven to 175-200 degree F.
Place the pretzel squares on a parchment paper lined baking sheet, and top each one with a Hershey Kiss or Rolos.
Cook for 2-3 minutes. Remove baking sheet from oven as soon as chocolate starts to look shiny. The Hershey Kiss will still be in original shape.
Press a M&M into the center of each Hershey Kiss.
Refrigerate for approximately 15-20 minutes or until cool. Store in airtight container for up to 2 weeks.
*Kisses, hugs and rolos need different times to soften. Do separate batches for each type of chocolate.