Impossible Peanut Butter Cookies

Three ingredients. That’s it. Peanut butter, sugar, and a single egg mixed together, rolled into balls, pressed flat with a fork, and baked. The famous “impossible” peanut butter cookie has been a starter recipe for kids and a dorm-room MVP for decades because it works without flour, butter, baking soda, or anything else most cookies demand.

The magic is in what you don’t need. The peanut butter provides the fat. The egg binds. The sugar sweetens, dissolves into the batter, and helps the cookies set as they bake. Done. Naturally gluten-free, no leavening required, no patience required. They’re ready start-to-finish in about 22 minutes.

The fork crosshatch on top isn’t just for looks (it presses the rounded balls flat enough to bake through evenly).

Pro Tips

• Use commercial creamy peanut butter (Skippy, Jif). Natural peanut butter has too much oil and too little stabilizer; the cookies fall apart.
• Roll the dough into walnut-sized balls (the recipe specifies it). Smaller balls overbake; bigger balls stay raw in the middle.
• Press fork crosshatches gently. Pressing too hard leaves cookies thin and burnt around the edges.
• Pull cookies when just lightly browned. They look soft when hot and firm up as they cool. Overbaked cookies turn dry and crumbly fast.
• Move them to a cooling rack immediately (the recipe is specific). Left on the hot pan, they keep cooking and crack apart when you finally lift them.

Variations

• Swap white sugar for brown sugar for a chewier, slightly molasses-tinged version.
• Add 1 teaspoon of vanilla and a pinch of salt for a more rounded flavor.
• Press a single chocolate kiss or a Reese’s cup into the top of each cookie right after baking for a peanut butter blossom-style finish.