Peanut Butter Cookies Instructions: First off, we're gonna sift the dry ingredients for making Peanut Butter Cookies recipe starting with 2-1/4 cups or about 270 grams of all-purpose flour. There we go. It's close.3/4 of a teaspoon of baking soda.I'm adding in 1/2 a teaspoon of salt now, but we're gonna garnish this cookie with beautiful flakes of sea salt ...