01 - Line a baking sheet with parchment paper to prevent sticking and ensure easy removal.
02 - Place semisweet chocolate chips in a microwave-safe bowl. Heat in 30-second intervals, stirring thoroughly after each interval, until completely smooth and melted.
03 - Pour melted semisweet chocolate onto prepared baking sheet. Spread evenly with a spatula to form a rectangle approximately 1/4 inch thick.
04 - In separate microwave-safe bowls, melt white chocolate chips and colored candy melts. Heat each in 20-second intervals, stirring between intervals, until smooth.
05 - Drop spoonfuls of melted white chocolate and colorful candy melts over the dark chocolate base. Drag a toothpick or skewer through the chocolates to swirl colors together, creating a marbled pattern.
06 - While chocolate is still warm and soft, immediately sprinkle candy-coated chocolates, candy eyes, and Halloween sprinkles evenly over the surface.
07 - Allow bark to set at room temperature until firm, approximately 15-20 minutes. For faster setting, refrigerate for 10-15 minutes.
08 - Once completely firm, break bark into irregular, rustic-sized pieces. Arrange on serving platter.