Arrange Waffle Pretzels in a single layer on a Baking sheet along with Mini M&Ms.
Melt Chocolate in a small bowl either over a pot of boiling water or in the microwave.
Pour the melted chocolate over the pretzels and smooth carefully with a spatula.
Sprinkle more M&Ms and Sprinkles over the chocolate.
Refrigerate for about 30 minutes or until firm.
Break the bark into pieces and serve.