This is the easiest cookie recipe my aunt slipped me on a handwritten card years ago, and it honestly feels like a little vintage baking secret. These 3-ingredient peanut butter cookies come together in minutes, bake up soft and crumbly, and melt in your mouth. They’re the kind of treats that go straight from a foil-lined baking sheet into everyone’s hands before they’ve even fully cooled, which makes them perfect for busy weeknights, last-minute bake sales, or when you just need something sweet without dragging out half the pantry.
Serve these cookies slightly warm so the centers stay tender and the peanut butter flavor really shines. They’re perfect with a cold glass of milk, a cup of coffee, or an evening mug of tea. For a simple dessert plate, pair them with a bowl of sliced apples or strawberries to balance the richness. If you’re entertaining, stack them on a small platter or leave them right on the foil-lined baking sheet for a casual, just-baked feel—people will grab them as they walk by.
3-Ingredient Peanut Butter CookiesServings: 18 cookies
Ingredients
1 cup creamy peanut butter (not natural, well-stirred)
1 cup granulated sugar
1 large egg
Directions
Line a baking sheet with aluminum foil and lightly grease it with a bit of cooking spray or a thin swipe of oil. This keeps the cookies from sticking and makes cleanup easy, just like my aunt always did.
Preheat your oven to 350°F (175°C) so it’s fully heated by the time your dough is mixed. These cookies bake quickly, so an accurate temperature helps them stay soft and tender.
In a medium mixing bowl, combine the peanut butter, granulated sugar, and egg. Stir with a sturdy spoon or spatula until the mixture is smooth, thick, and evenly blended with no streaks of egg or sugar remaining.
Let the dough sit for 2–3 minutes while you clear a little counter space. This short rest helps the sugar hydrate slightly and makes the dough a bit easier to roll into balls.
Scoop about 1 tablespoon of dough at a time and roll it between your palms into small balls. Place each ball on the foil-lined baking sheet, leaving about 2 inches of space between them to allow for gentle spreading.
Using the back of a fork, press down gently on each dough ball to flatten it slightly and create a criss-cross pattern. Press once in one direction, then turn the fork and press again to form the classic vintage peanut butter cookie look.
Transfer the baking sheet to the preheated oven and bake for 9–11 minutes, until the cookies look set around the edges and just barely golden on the bottom. The tops will still look soft; avoid overbaking so they stay melt-in-your-mouth tender.
Remove the baking sheet from the oven and let the cookies cool on the foil for at least 5–10 minutes. They will be very soft right out of the oven and firm up as they cool, so resist the urge to move them too soon.
Once they’ve set enough to handle, gently lift the cookies off the foil with a thin spatula. Serve warm from the pan for that straight-off-the-baking-sheet magic, or let them cool completely before storing in an airtight container at room temperature for up to 3 days.
Variations & Tips
For a slightly different sweetness, you can swap half of the granulated sugar for light brown sugar, which adds a faint caramel note while still keeping the recipe at three ingredients. If you prefer a less-sweet cookie, reduce the sugar to 3/4 cup; the cookies will be a bit more delicate but still hold together. Use creamy peanut butter for the softest, most uniform texture—classic shelf-stable brands work best. Natural peanut butter that separates in the jar can make the dough oily or crumbly, but if that’s all you have, stir it very thoroughly and chill the dough for 20–30 minutes before baking to help it hold shape. For smaller households, bake half the dough and roll the rest into balls, freeze on a tray, then store in a freezer bag for up to 2 months; bake from frozen, adding 1–2 extra minutes. Always bake the cookies fully (no raw centers) and cool them on a clean surface or the foil-lined pan before stacking or storing. Because this recipe contains raw egg before baking, avoid tasting the dough and wash your hands and utensils after handling it. Store any leftover cookies in an airtight container at room temperature, away from direct heat or sunlight, and discard if they develop an off smell or texture.
