One-Bowl Peanut Butter Oatmeal Cookies
Chewy and wholesome peanut butter oatmeal cookies made in one bowl, perfect for a quick and satisfying homemade treat. This American-inspired recipe, ready in about 22 minutes, layers rolled oats, all-purpose flour, baking soda into a dessert worth slowing down for — great for weekend baking, holiday tables, or any time you want a sweet payoff at the end of a meal. Each serving lands at about 110 calories and feeds 24, so it slots into a weekend bake or a special-occasion dessert tray. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 1 1/2 cups rolled oats
- 3/4 cup all-purpose flour
- 1/2 tsp baking soda
- 1/4 tsp salt
- 1/2 cup, softened unsalted butter
- 1/2 cup, packed brown sugar
- 1/4 cup granulated sugar
- 3/4 cup creamy peanut butter
- 1 large egg
- 1 tsp vanilla extract
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Equipment for this recipe
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Instructions
- Step 1: Preheat oven to 350°F and line two baking sheets with parchment paper.
- Step 2: In a large mixing bowl, combine 1 1/2 cups rolled oats, 3/4 cup all-purpose flour, 1/2 tsp baking soda, and 1/4 tsp salt, stirring to mix.
- Step 3: Add 1/2 cup softened unsalted butter, 1/2 cup packed brown sugar, 1/4 cup granulated sugar, and 3/4 cup creamy peanut butter to the dry ingredients.
- Step 4: Crack in 1 large egg and add 1 tsp vanilla extract. Using a wooden spoon or electric mixer on low, mix everything together until a sticky dough forms.
- Step 5: Scoop rounded tablespoons of dough onto the prepared baking sheets, spacing about 2 inches apart.
- Step 6: Flatten each cookie slightly with the back of a fork, creating a crisscross pattern.
- Step 7: Bake for 10-12 minutes until the edges are golden and the centers are set.
- Step 8: Remove from oven and let the cookies cool on the baking sheets for 5 minutes before transferring to a wire rack to cool completely.








