These 3 ingredient peanut butter cookies bring together creamy peanut butter, sugar, and an egg for a simple, flourless treat with a rich peanut flavor and a lightly crisp outside. The dough comes together in one bowl, and a fork creates the familiar crisscross pattern on top. With no flour, butter, or baking powder to measure, this recipe is a straightforward option when you want homemade cookies without a long ingredient list.

Bake them at 350°F and let them cool before moving them off the baking sheet. These cookies are naturally free of wheat ingredients, but check every product label if you need to avoid gluten because cross-contact can occur.

Recipe Snapshot

• Prep time: 10 minutes
• Cook time: 10–12 minutes, depending on cookie size and oven
• Cooling time: About 20–30 minutes
• Total time: About 40–50 minutes, including cooling
• Yield: About 18–24 small cookies
• Difficulty: Easy
• Equipment: Mixing bowl, spatula, measuring cups, baking sheet, parchment paper, fork, and cooling rack

Why This Recipe Works

Peanut butter supplies most of the dough’s fat, flavor, and structure. Sugar adds sweetness and helps the cookies develop lightly browned edges. The egg binds the ingredients together so you can shape the mixture into individual cookies without adding flour.

There is no conventional flour-based dough here, so the texture differs from a classic bakery-style peanut butter cookie. Expect a tender, slightly crumbly center with a concentrated peanut flavor. The cookies can be fragile while warm, which is why cooling is part of the method rather than an optional finishing step.

Ingredients and Helpful Notes

You need only three ingredients for the core recipe. Measure them carefully because there are no extra dry ingredients to absorb moisture or correct a loose dough.

1. Creamy peanut butter

Use 1 cup (about 250–260 g, depending on the product) of conventional creamy peanut butter. A smooth, well-mixed product is a practical starting point for consistent dough. Natural peanut butter can separate, and the amount of oil in the jar may affect how easily the cookies hold their shape. If using natural peanut butter, stir it thoroughly before measuring; the result may be more crumbly.

2. Granulated sugar

Measure 3/4 cup (about 150 g) of granulated sugar. It sweetens the cookies and contributes to their structure as they bake. Avoid adding extra sugar to the dough unless you are intentionally changing the recipe. More sugar can affect spreading, sweetness, and texture.

3. One large egg

Use 1 large egg. It helps bind the peanut butter and sugar into a workable dough. Bring it close to room temperature if convenient, although it is not essential for this simple mixture. Do not leave the mixed dough sitting out for an extended period before baking.

How to Make 3 Ingredient Peanut Butter Cookies

Step 1: Prepare the oven and baking sheet

Heat the oven to 350°F. Line a baking sheet with parchment paper. If baking multiple trays, prepare a second sheet so you can work in batches without placing fresh dough on a hot pan. Position the rack near the center of the oven for even baking.

Step 2: Mix the three ingredients

Add the peanut butter, sugar, and egg to a mixing bowl. Stir with a sturdy spatula until the ingredients are evenly combined and no streaks of egg remain. The dough should be thick enough to scoop and roll. Scrape the sides and bottom of the bowl to incorporate any peanut butter or sugar that has collected there.

Step 3: Shape the cookies

Scoop the dough into portions about 1 tablespoon each for smaller cookies. Roll each portion gently between your hands to form a ball, then place it on the prepared baking sheet with roughly 2 inches of space between portions. The exact yield depends on how much dough you use for each cookie.

Step 4: Make the crisscross pattern

Press each dough ball gently with the tines of a fork. Turn the fork and press again in the opposite direction to form a crosshatch. Flatten the cookies to a similar thickness so they bake at approximately the same rate. If the fork sticks, lightly dampen its tines and shake off excess water before continuing.

Step 5: Bake until the cookies are set

Bake for approximately 10–12 minutes, checking the first batch near the lower end of the range. Look for edges that appear set and lightly golden, with tops that no longer look like wet dough. Smaller or thinner cookies may finish sooner; larger cookies may need additional time. Do not rely on browning alone as a food-safety guarantee. If checking with a thermometer is practical, follow USDA guidance for thoroughly cooked egg-containing dishes.

Step 6: Cool before serving

Remove the baking sheet from the oven and let the cookies rest on the pan for about 5–10 minutes. They may seem soft at first, but they firm as they cool. Transfer them carefully to a wire rack and allow them to cool completely before stacking or storing. Moving them too early can cause them to break.

Tips for Better Peanut Butter Cookies

• Measure consistently. Use the same scoop for every cookie so the batch bakes evenly.
• Mix until uniform. Pockets of egg or sugar can lead to uneven texture.
• Flatten the dough. These cookies benefit from the fork press, which helps create a more even thickness.
• Watch the first batch. Oven temperatures and baking sheets vary. Use the first tray to learn how quickly your oven bakes this dough.
• Let them cool. The cookies are delicate when hot and easier to handle after setting.

Troubleshooting

Why is my dough oily or too soft?

The peanut butter may have a high oil content or may not have been evenly mixed in the jar. Stir separated peanut butter thoroughly before measuring. If the dough still seems soft, shape a small test cookie and bake it before changing the whole batch. Avoid automatically adding flour, because that would make this a different recipe with more than three ingredients.

Why are my cookies crumbly?

These flourless cookies are naturally more delicate than cookies made with wheat flour. Natural peanut butter, overbaking, or moving the cookies while hot can make them more fragile. Use a consistent peanut butter, watch the baking time, and let the cookies firm on the tray before transferring them.

Why did my cookies turn out dry?

They may have baked too long or been shaped smaller than intended. Check the cookies early, especially if your oven runs hot. Remove them when the edges are set and the tops no longer appear wet, then allow carryover heat and cooling to finish setting their texture.

Substitutions and Variations

Crunchy peanut butter: It can add small peanut pieces and a little extra texture. The final consistency may differ from the creamy version.

Brown sugar: Some comparable recipes use brown sugar instead of granulated sugar. It can produce a different flavor and texture, so treat it as a variation rather than an identical result.

Other nut or seed butters: Almond butter or sunflower seed butter may behave differently because their fat and moisture content varies. They should be tested separately before presenting them as reliable one-to-one substitutions. Peanut butter is an allergen; changing the butter does not automatically make a recipe safe for someone with allergies.

Optional additions: Vanilla, salt, chocolate chips, or a sugar coating can be appealing, but each addition changes the three-ingredient promise. Keep the base recipe to its three listed ingredients.

Storage and Make-Ahead Notes

Allow the cookies to cool completely before placing them in an airtight container. Comparable three-ingredient peanut butter cookie recipes recommend using cookies stored at room temperature within about three days for best quality. Keep them away from heat and direct sunlight, and avoid sealing them while warm because trapped steam can soften their texture.

For longer storage, freeze fully cooled cookies in a freezer-safe, airtight container with parchment between layers to reduce sticking. Let them thaw while covered or in their container to limit condensation on the surface. Freezer texture can vary, so check the cookies after thawing before deciding whether to use them for serving or gifting.

Because this recipe contains egg, handle the dough hygienically and bake it thoroughly. Do not taste raw dough. For authoritative egg-handling and cooking advice, consult the USDA FSIS egg safety guidance.

Frequently Asked Questions

Are three-ingredient peanut butter cookies flourless?

Yes. This formula contains peanut butter, sugar, and egg rather than wheat flour. Check product labels and manufacturing information if you need to avoid gluten due to celiac disease or another medical requirement.

Do I need to chill the dough?

This proposed method does not require a separate chilling period. If the dough is difficult to shape, pause and assess whether the peanut butter was fully mixed before changing the recipe. Chilling may make some doughs easier to handle, but it has not been validated here as a necessary step.

Can I make these cookies without an electric mixer?

Yes. A sturdy spatula and a mixing bowl are sufficient for combining these three ingredients. Stir thoroughly and scrape the bowl so the mixture is uniform.

How do I know when the cookies are done?

Look for set edges and tops that no longer appear wet. Timing is a guide rather than a guarantee because cookie size and ovens vary. Since the recipe contains egg, thorough cooking is important.

Can I add chocolate chips and still call them three-ingredient cookies?

Not if you count every ingredient in the working recipe. Adding chocolate chips creates a four-ingredient variation. You can still make that version, but describe the ingredient count accurately.

If you enjoy simple homemade treats, explore more sweet ideas on our Recipes page and find another dessert to make for your next sweet moment.