Step 1: Prepare Your Crock Pot - Set your Crock Pot to low heat for even melting.
Step 2: Melt the Chocolate - Combine semi-sweet chocolate chips, white chocolate almond bark, vegetable shortening, and vanilla extract in a mixing bowl. Microwave in 30-second intervals, stirring until smooth.
Step 3: Add the Nuts - Stir in the peanuts and cashews until fully coated.
Step 4: Transfer to the Crock Pot - Pour the mixture into the preheated Crock Pot and spread evenly.
Step 5: Cook Low and Slow - Cover and cook on low for 1.5 to 2 hours, stirring every 30 minutes.
Step 6: Form the Clusters - Scoop small clusters onto wax or parchment paper, shaping them into mounds.
Step 7: Drizzle with White Chocolate - Melt the remaining white chocolate almond bark and drizzle over the clusters.
Step 8: Enjoy! - Once set, serve or package as gifts.