u003cemu003eMy cookies spread too much:u003c/emu003e This can be caused by a few things including not letting the cookies chill in the fridge for a full hour, expired baking powder, not creaming the butter properly, or using too little flour.u003cbr/u003eu003cemu003eMy cookies are cakey and fluffy: u003c/emu003eThis is usually due to too much flour or overbaking the cookies. The best way to prevent this is to measure flour in grams and always make sure to remove the cookies from the oven when they are still slightly undercooked.