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Chewy Peanut Butter Oatmeal Cookies

chewy peanut butter oatmeal cookies - featured image

These chewy peanut butter oatmeal cookies are quick and easy to make, perfect for school lunchboxes. They stay soft and chewy with a comforting peanut butter flavor and hearty oats.

Ingredients

Scale
  • 1 cup peanut butter (smooth or crunchy, unsweetened or lightly sweetened; natural creamy preferred)
  • 1 ½ cups old-fashioned rolled oats
  • ¾ cup packed brown sugar (light or dark)
  • ½ cup all-purpose flour (or gluten-free flour for gluten-free version)
  • ½ teaspoon baking soda
  • ¼ teaspoon salt
  • 1 teaspoon vanilla extract
  • 1 large egg, room temperature
  • Optional: ½ cup mini chocolate chips, chopped nuts, or raisins

Instructions

  1. Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper or a silicone mat.
  2. In a medium bowl, whisk together rolled oats, all-purpose flour, baking soda, and salt.
  3. In a large bowl, beat peanut butter with brown sugar until smooth and creamy. Add egg and vanilla extract, mixing until fully incorporated.
  4. Gradually fold the oat mixture into the peanut butter mixture until sticky but well combined. Add a teaspoon of milk or water if too dry.
  5. Fold in optional mix-ins like mini chocolate chips, nuts, or raisins if desired.
  6. Scoop dough balls about 2 inches apart onto the prepared baking sheet. Slightly flatten each ball with the back of a fork in a crisscross pattern.
  7. Bake for 10 to 12 minutes until edges are set and just starting to brown but centers remain soft.
  8. Let cookies cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.

Notes

Use room temperature egg and peanut butter for best mixing. Do not overbake to keep cookies soft and chewy. Adding a slice of bread to the storage container helps keep cookies soft longer. For vegan version, substitute egg with flax egg and use dairy-free peanut butter. Gluten-free version requires gluten-free oats and flour.

Nutrition

Keywords: peanut butter cookies, oatmeal cookies, chewy cookies, school lunchbox snacks, quick cookies, easy baking