Measure 2-1/2 cups all-purpose flour and pour over mixture in bowl. Measure 1 tsp baking powder and sprinkle over flour. Measure 1 tsp salt and sprinkle over flour and baking powder.
Mix everything together either with a fork or with your hands. Cover with plastic wrap or put in a zip bag and put dough in the icebox to chill (at least one hour). You can make lots of dough at once and keep it in your icebox in a plastic bag (it will last a long time). Then whenever you make cookies, just take out as much as you need.
Me heat oven to 400 degrees. Now take some cookie dough out of the icebox. If you all out of cookie dough (oh dear) just make some more!
Sprinkle counter with flour and put dough on it. Roll out dough flat, about 1/4-inch thick. Now come the tricky part-need to find things to make SHAPES with, 2 to 3-inches a good size. Let me see...Ah! Can use GLASS to make round cookies....and those box lids make good rectangles and squares. Me just push them down on dough and peel away dough on outside. Then me make squares and rectangles (or whatever shape cutter you have).
Put cookies on ungreased cookie sheet, and put cookie sheet in oven. O.K. now come the hard part again. Me have to wait about 10 minutes while cookies cook and turn golden brown on bottoms. What me going to eat?