Quick and Easy Peanut Butter Cookies Ingredients 1 egg 1/4 cup flour 1/2 cup peanut Butter 1/2 cup sugar 1/2 tsp baking powder 1 tsp vanilla extract Method Preheat your oven to 350 °F (177 °C). Cream together 1 egg and 1/2 cup sugar until slightly frothy. Stir in 1/2 cup of peanut butter to creamed mixture and mix until smooth. Add 1 teaspoon of vanilla. Add the flour as needed to thicken the batter, if necessary. Drop by rounded spoonfuls about two inches apart onto a non-stick cookie sheet and mash with fork in a checked pattern. Sprinkle them evenly with sugar. Bake for 8-12 minutes until the cookies are slightly brown on the edges. Let cookies cool for several minutes before removing them from the cookie sheet.