Add the chocolate bark, chocolate chips, and toffee bits to the crockpot.
Set to cook on low for 1 hour, stirring at the halfway mark.
Line a baking tray with parchment paper.
Drop spoonfuls of the chocolate-toffee mixture onto the prepared cookie sheet.
Top each drop with a pecan half.
Place the caramels and milk in a small bowl and melt in the microwave, heating at 15-second intervals and stirring in between.
Drizzle the caramel over the chocolate pecans.
Place them in the refrigerator to set for at least an hour.