3-Ingredient Peanut Butter Cookies

Warm peanut butter cookies have a way of making the kitchen feel instantly cozier, especially when their edges are set and the centers are still soft. These 3-Ingredient Peanut Butter Cookies deliver that familiar crisscross look and a rich, nutty flavor without flour, butter, or a long shopping list.

The dough comes together in one bowl, and the cookies bake in about 10 minutes. They’re lightly crisp around the edges, tender through the center, and pleasantly crumbly once cooled. With 24 cookies in one batch, this simple recipe is handy for an afternoon treat, cookie tray, or last-minute dessert.

Why You’ll Love This Recipe

• Only three everyday ingredients are needed.
• The dough comes together in one mixing bowl.
• Each batch bakes in about 10 minutes.
• The recipe makes 24 neatly portioned cookies.
• The baked cookies keep at room temperature for up to five days.

Ingredients

• 1 cup (approximately 256 g) commercial stabilized peanut butter, creamy or crunchy and well stirred
• 1 cup (200 g) granulated sugar
• 1 large egg, approximately 50 g without the shell

Use regular shelf-stable peanut butter with a smooth, evenly blended consistency. Commercial peanut butter makes the dough more predictable than natural peanut butter with separated oil.

How to Make This Recipe

Step 1: Prepare the Oven and Pans

Preheat the oven to 350°F (175°C). Set out two light-colored aluminum half-sheet pans measuring approximately 13 × 18 inches. Leave the pans ungreased so the cookies can hold their shape as they bake.

Pro Tip: Light-colored aluminum pans promote more even baking and reduce the risk of overly dark cookie bottoms.

Step 2: Mix the Dough

Place the peanut butter, granulated sugar, and egg in a medium mixing bowl. Beat with an electric hand mixer until the ingredients form a smooth, creamy dough with no visible streaks of egg.

Pro Tip: Stir the peanut butter thoroughly before measuring it so the fat and solids are evenly distributed throughout the dough.

Step 3: Shape and Flatten

Roll the dough into 1-inch balls and arrange them about 2 inches apart on the ungreased baking sheets. Flatten each ball with a fork, then turn the fork and press again to create the traditional crisscross pattern. This step also gives the thick dough an even shape for baking.

Step 4: Bake Until the Edges Set

Bake the cookies for 9–11 minutes, aiming for about 10 minutes. They’re ready when the edges appear firm and the crisscross pattern remains clearly defined. The centers may still feel soft while hot, so don’t continue baking until the entire cookie feels hard.

Overbaking is a common cause of dry, sandy, or excessively crumbly peanut butter cookies.

Step 5: Cool Completely

Leave the cookies on the baking sheets for 5 minutes. Once they have begun to firm, transfer them carefully to a wire rack and let them cool completely for approximately 20 minutes. The cookies become more stable as they cool, so moving or eating them too early can cause them to break apart.

Pro Tip: Slide a thin spatula completely beneath each cookie before lifting it from the pan.

Expert Tips for Better Results

• Measure the peanut butter and sugar carefully. Changes to their ratio can affect sweetness, structure, and texture.
• Use a large egg. A smaller egg may not provide enough moisture and binding power for the dough.
• Keep the dough balls close to 1 inch so all 24 cookies bake at a similar rate.
• Press each cookie before baking because this flourless dough doesn’t spread very much on its own.
• Watch the edges rather than waiting for the centers to become firm. The cookies continue setting as they cool.
• Allow the cookies to cool fully before storing them so trapped heat doesn’t create excess moisture in the container.

Serving Suggestions

• Serve the cookies with a cold glass of milk for a simple contrast to their rich peanut flavor.
• Add them to a mixed cookie platter where their crisscross tops make them easy to identify.
• Pair one cookie with hot coffee, black tea, or unsweetened iced tea to balance its sweetness.
• Pack completely cooled cookies in a lunchbox or picnic container with parchment between the layers.
• Place a few cookies on a small dessert plate for an easy after-dinner treat.

Storage and Reheating

• Room temperature: Cool the cookies completely, then store them in an airtight container or cookie jar for up to five days.
• Refrigeration: Refrigeration is not required within the approved five-day room-temperature storage period. No separate refrigerated storage duration is specified.
• Freezing: Freeze the shaped dough balls on a baking sheet until firm, then transfer them to an airtight freezer container. A maximum freezer-storage period is not specified.
• Thawing: The dough balls are intended to be baked from frozen rather than thawed, but no adjusted baking time is specified. Watch for firm edges instead of relying on an unverified time extension.
• Reheating: Warm thawed, previously baked cookies in a 350°F oven for about 5 minutes. Oven warming helps refresh their texture; microwave reheating may make the cookies softer.