If you are not using room temperature butter, then cut up the butter into small pieces.

Combine the butter, oats and powdered sugar in a mixing bowl.

Sift in the cacao to avoid lumps.

Mix thoroughly.

Add the coffee slowly while mixing until fully combined.

Roll balls of your desired size.

If you want a coating, then place your desired coating in a deep plate and roll the balls in the coating.

Place the balls in an airtight container. Use a piece of parchment paper to separate the layers of balls. Store in the fridge, they keep for up to a week.

Eat as is. Havregrynskugler are delicious served cold.