For the rum balls, cream butter with powdered sugar and vanilla sugar. Stir in the Qimiq until smooth. Melt the orange chocolate in a hot water bath and stir into the butter mixture with the Qimiq.
Mix nuts and coconut flakes (reserve 1/3) and rum into butter-chocolate mixture. Chill for 4-5 hrs until firm and malleable.
Using a teaspoon, scoop out a small amount of the mixture at a time, shape into a ball and roll in the coconut flakes set aside.
Then refrigerate overnight.