This is the exact 3-ingredient peanut butter cookie recipe my aunt brought to a big family gathering years ago. She called it her “foolproof baking hack” because it skips flour, butter, and leavening, yet turns out golden, crackly cookies with that classic fork crosshatch every time. They’re rich, peanutty, and just sweet enough—and because the dough comes together in one bowl with pantry staples, you can have a full tray in the oven before the coffee finishes brewing. It’s a great example of how a few well-chosen ingredients can deliver nostalgic, bake-sale-level cookies with almost no effort.
Serve these peanut butter cookies slightly warm so the centers stay tender and the edges keep their delicate crunch. They’re perfect alongside a cold glass of milk, a cup of coffee, or black tea. For a casual gathering, pile them high on a simple floral plate or platter and let people grab them as they pass by. If you want to dress them up, drizzle a few with melted dark chocolate or serve them with a scoop of vanilla ice cream for an easy dessert plate.
3-Ingredient Peanut Butter CookiesServings: 18 cookies
Ingredients
1 cup creamy peanut butter (well-stirred)
1 cup granulated sugar
1 large egg, at room temperature
Directions
Preheat your oven to 350°F (175°C). Line a large baking sheet with parchment paper or a silicone baking mat so the cookies release easily and brown evenly.
In a medium mixing bowl, combine the peanut butter, granulated sugar, and egg.
Stir with a sturdy spoon or spatula until the mixture is completely smooth, thick, and glossy, with no visible streaks of egg or sugar. The dough will be soft but should hold together.
Using a tablespoon or small cookie scoop, portion out heaping tablespoonfuls of dough and roll them gently between your palms into balls. Place the dough balls on the prepared baking sheet, spacing them about 2 inches apart to allow for slight spreading.
Use the back of a fork to gently press each dough ball down, creating a crisscross pattern on top. Press just firmly enough to flatten them to about 1/2 inch thick; this gives the cookies their classic cracked surface and helps them bake evenly.
Bake on the center rack for 9–11 minutes, or until the cookies look set around the edges, are lightly golden on the bottom, and have small cracks on the surface. They should still look a bit soft in the centers; they will firm up as they cool.
Remove the baking sheet from the oven and let the cookies cool on the pan for 5–10 minutes. They will be fragile when very hot, so this resting time helps them set.
Carefully transfer the cookies to a floral patterned white plate or wire rack using a thin spatula. Let cool to just warm or room temperature before serving, when the tops are dry, lightly crackled, and the fork crosshatch is clearly visible.
Variations & Tips
For a slightly different texture, you can use crunchy peanut butter instead of creamy; the chopped peanuts add a pleasant bite. If you prefer a less sweet cookie, reduce the sugar to 3/4 cup, understanding the cookies will be a bit more delicate and may spread slightly less. A pinch of kosher salt and 1/2 teaspoon of vanilla extract (these would be additional ingredients, so no longer strictly 3-ingredient) can deepen the flavor if you’re not concerned about the ingredient count. For a chocolate twist, press a few chocolate chips or a chocolate candy into the center of each cookie as soon as they come out of the oven. To make smaller, bite-sized cookies for a crowd, roll 2-teaspoon portions of dough and shorten the bake time by 1–2 minutes, watching closely so they don’t overbake. Food safety tips: Always use a fresh, in-date egg and avoid tasting the raw dough, since it contains raw egg. If you’re baking for anyone with peanut or nut allergies, clearly label these cookies and keep them separate from other foods to prevent cross-contact. Store completely cooled cookies in an airtight container at room temperature for up to 4 days; for longer storage, freeze in a single layer, then transfer to a freezer bag, and thaw at room temperature before serving.
