2 cups flour
1/2 cup sugar
3 1/2 tsp. baking powder
1/2 tsp. salt
1/4 cup butter
2/3 cup milk
1. Mix dry ingredients ie. flour, sugar, baking powder, and salt in a bowl that is large enough for your purposes. (when in doubt about bowl size, go bigger.)
2. Add milk, beaten egg, and melted butter. Mix with big spoon.
3. Put mix on greased cookie sheet
4. Bake in oven heated to 425 F (approx. 230 C) for 12 minutes
5. Eat biscuits
Should make about 12 biscuits, unless you are like me and posses no sense of proportion in which case it makes 4.
One difficulty I have is that it's very hard to make this recipe for one person; it's terribly big and somewhat difficult to halve and I don't like refrigerated mix, thus if I want to have biscuits I must invite a friend or two. On the other hand eating is far more enjoyable with company.