Heat candy melts in a microwave-safe bowl at 30-second intervals, stirring between intervals until melted and smooth.
Add the oatmeal and toffee to the melted chocolate and stir until everything is coated in chocolate.
Using two spoons or a spring-release scoop, scoop cookies out and place them on waxed or parchment paper. You can flatten or leave dome-shaped. Allow the chocolate to dry and harden before serving. Store in an airtight container. They'll stay fresh for 7 to 10 days in an airtight container. You can freeze up to 2 months.