Place donuts, nutella, chocolate ice cream and milk in a blender. Blend until smooth and creamy. Set aside.
Place chocolate buttons or chips in a microwave safe bowl. Microwave on high for one minute.
Dip the jar in the chocolate, and coat really well with the chocolate. Using a spoon, coat the inside of the glass with chocolate. Pour the milkshake in the glass. Top with donuts and wafer sticks. Top with more melted chocolate.