I was on the hunt the other day for a very simple biscuit recipe with as few ingredients as possible and this is the one we decided to try and the results were pretty good. I got it from http://www.thecakerecipe.co.uk/easy-biscuit-recipe/ which has loads of good cake recipes on it. I also liked it as it contained less butter than lots of others I looked at. I actually adapted it a bit from the original and my version of the ingredients is below.
6oz (150g) plain flour
4oz (100g) butter
2oz (50g) sugar
1 desert spoon of vanilla extract.
Method (copied and pasted from the site with my changes in italics)
Pre-heat oven to 180°C/ 350°F/ Gas Mark 4
Sift the plain flour into a large mixing bowl and add the sugar (I don’t bother sifting)
Rub in the butter and bring mixture together
Add the vanilla extract (I found that the mixture was a bit too crumbly without it.)
Roll out to 1/4″ (6mm) thickness
Cut using a biscuit cutter
Place biscuits (using a palette knife) onto 2 or 3 lightly greased baking trays
Bake for about 15 minutes or until golden brown (I did it for 10 mins but we have a fan oven which tends to be hotter)
Don’t worry if it seems like the mixture is a bit crumbly as long as you can roll it and it sticks it’ll be fine and the end result is super tasty!