Mint needs to be crushed. You can immediately with sugar in a blender.

Then in a bowl, mix the softened butter, mint sugar and flour. Mix with your hands until smooth. You add the egg. In the end, get alien the dough a greenish color :)

With the shape of the cookie too easily. You can pinch off, you can spoon to take pieces, roll them into a ball, flatten and lay on a baking tray lined with baking paper. Cookies when baking almost does not increase, so place it on a baking sheet in any dense order. Bake in a preheated 180 oven for 20-25 minutes. Hard to "fry" not worth it. Slightly olive color would be sufficient.