Place white chocolate wafers and peanut butter in a large, microwave-safe glass bowl. Microwave at 50% power for 2-3 minutes. Stir and microwave for an additional 2-3 minutes until completely melted. The time required will depend on your microwave.
Line a large baking sheet with parchment paper. Spread the white chocolate-peanut butter mixture evenly on the lined baking sheet.
Melt the chocolate chips in a small bowl in the microwave. This should take less than a minute at 50% power.
Drop spoonfuls of melted chocolate randomly on the white chocolate mixture. Use a skewer or the tip of a knife to swirl the chocolate.
Cool, break into bite size pieces or use a bench knife to cut into small squares.