On its own, cinnamon can be smoky, spicy or bitter; only when it's paired with sugar (as it is in this beloved cookie) does it taste sweet and familiar. How could they possibly get any more delicious? Peanut butter, says Adimando. She chops or smashes a few pieces of mini Reese's cups into each cookie or mixes peanut butter chips into the batter. Her best idea, though: Make a spread from butter, peanut butter and sugar, and sandwich it between two cookies.
Get the recipe: Snickerdoodles