1/4 lb or 1 stick unsalted butter (room temperature)
2 1/2 cups rolled oats
1 1/4 cups sugar
1 tsp vanilla extract or 1 tbsp vanilla sugar
1 tbsp strong coffee (cold)
2 tbsp unsweetened cocoa
Roll in coconut flakes or pearl sugar.
Mix butter, sugar and coffee together first and then add all the other ingredients. Make sure the butter is mixed in well.
The batter should be easy to roll and not too sticky, you can adjust consistency with oats or coffee.
Roll batter into about 25 small balls and roll them in pearl sugar or coconut flakes.
Refrigerate for about 2 hours.