Add cashews to the bottom of a 6-quart or larger slow cooker.
Break German chocolate over the cashews.
Add semi-sweet chocolate chips.
Place almond bark chunks on top.
Lay a paper towel over the slow cooker and place the lid on top.
Cook on Low for 1 hour, then stir until smooth and cashews are coated.
Continue cooking briefly if needed, using a dry paper towel under the lid.
Scoop clusters onto parchment or wax paper.
Let set completely before storing.
Notes
Use a completely dry scoop or spoon because moisture can ruin melted chocolate. Do not skip the paper towel under the lid; it catches condensation. Cashew clusters freeze well and can be made weeks ahead. Store between parchment layers so the clusters do not stick together.
Keyword chocolate cashew clusters, crock pot candy