Crush pretzels into pieces. Melt chocolate in a heatproof bowl over a pot of simmering water. Once chocolate is melted, add most of the pretzel pieces and mix well. Pour chocolate-pretzel mixture over a parchment-lined baking sheet and spread into an even layer.
Drizzle evenly with caramel sauce and sprinkle remaining pretzel pieces on top. Chill in the fridge until set, approx. 45 min. Cut into pieces and enjoy!