Preheat oven to 325 degrees Fahrenheit. Prepare a baking tray with a baking sheet.

Mix the sugar with the butter (or margarine or oil), vanilla sugar, and rose/orange blossom water until combined well.

Gradually add the flour to the mixture, while making sure it remains moist, and not dry. Create balls of dough the size of a golf ball.

Gently squash and flatten each ball to create a nicely rounded cookie (not too thin). Gently press in the center of each cookie with your finger and place one or two pistachio halves (or your desired topping) in the center .

Bake at 325 degrees Fahrenheit for seven to 10 minutes, or until the bottoms of the cookies get slightly golden brown but the tops remains white.