I make cookies, and sell them, I have been told they taste pretty good!

1 cup sugar
1 cup butter
1 egg
2 and 1/2 cups flour
1/2 tsp van essence or extract (I use a concentrated vanilla extract, I think this makes a real difference)

cream butter and sugar add egg and vanilla, mix in flour, chill in fridge for around an hour. roll out and cut, cook until edges are slightly browned around 10-15 mins.

you can add almond essence or lemon essence if you want a bit extra flavour.

I would just try it with the brown sugar and see how it goes, I dont add any baking powder or use sr flour in mine either as then the cookies spread too much and dont keep their shape. if the weather is a bit humid or warm, once you have cut the cookies out, place the tray with cookies on in the fridge for 1/2 an hour also.