Combine all ingredients and mix for about 5 minutes. The mix will look flaky at the beginning but do not add any water. Keep mixing and it will come together into a dough
1 cup butter at room temperature, 2 ½ cup flour - type 00, ½ cup caster sugar, 1 teaspoon vanilla extract, 1 pinch salt
Add the pistachios at the end. You can also add lemon or orange zest
Roll it in two sausage shapes and wrap in cling foil.
Keep in the fridge until the butter solidifies again, for a minimum of 30 minutes. You can freeze them if you want to keep a supply.
When you are ready to bake them, cut the sausage into slices and lay them over a baking tin covered with parchment paper.
Sprinkle with sugar and cook in a hot oven at 355 F - 180 C for 15 minutes.
Once they are done, wait at least 10 minutes before placing them on a rack to cool down.
Video
Notes
Before you make these cookies, remember you need the butter at room temperature. Take it out of the fridge at least 30 minutes before
Do not melt the butter in the microwave, it should be just slightly soft but not melted
When you make the dough, the mix will look flaky at the beginning but do not add any water. Keep mixing and it will come together into a dough
You can freeze the dough wrapped in foil if you want to keep a supply for the winter.
You can mix it with any nuts, other essences or zests