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Soft Peanut Butter Oatmeal Cookies

These Soft Peanut Butter Oatmeal Cookies are chewy, rich, and perfectly sweet with hearty oats and creamy peanut butter. With the option to add chocolate chips, nuts, or raisins, these easy homemade cookies are ideal for satisfying your sweet tooth anytime.

Ingredients

Scale

Dry Ingredients:

  • 1 cup all-purpose flour

  • 1 tsp baking soda

  • ½ tsp cinnamon (optional)

  • ¼ tsp salt

  • 1½ cups old-fashioned rolled oats

Wet Ingredients:

  • ½ cup unsalted butter, softened

  • ½ cup creamy peanut butter

  • ½ cup brown sugar, packed

  • ¼ cup granulated sugar

  • 1 large egg

  • 1 tsp vanilla extract

Optional Add-Ins:

  • ½ cup chocolate chips or peanut butter chips

  • ½ cup chopped peanuts or raisins

Instructions

  • Preheat Oven & Prepare Pans:
    Preheat to 350°F (175°C). Line two baking sheets with parchment or silicone mats.

  • Mix Dry Ingredients:
    In a medium bowl, whisk flour, baking soda, cinnamon (if using), salt, and oats.

  • Cream Wet Ingredients:
    In a large bowl, beat butter and peanut butter until smooth. Add sugars and beat until fluffy. Mix in egg and vanilla.

  • Combine & Add-Ins:
    Gradually stir dry mixture into the wet ingredients. Fold in any optional add-ins.

  • Scoop & Bake:
    Scoop dough by rounded tablespoons onto prepared sheets, spacing 2 inches apart. Flatten slightly. Bake for 9–11 minutes, until edges are golden and centers are just set.

  • Cool & Serve:
    Let cookies cool on baking sheet for 5 minutes, then transfer to a wire rack to cool completely.

Notes

  • For extra chewiness, underbake slightly and allow to finish setting on the pan.

  • Use natural peanut butter for a healthier version, but expect a slightly different texture.

  • These freeze well—both dough and baked cookies!