In a bowl over simmering water (double boiler) add the peanut butter and dark chocolate chips.
Heat until the chocolate has melted and the peanut butter is stirred in smoothly.
Filling
Add the marshmallows, nuts, and gummies to the chocolate mixture. Stir until completely covered with the chocolate mixture and evenly distributed throughout the mixture.
Pour the mixture onto a tray then chill to set.
Once set, slice the rocky road into squares to serve.