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4.56 from 9 votes

Peanut Butter Oatmeal Cookies

These peanut butter oatmeal cookies are chock full of peanut flavor! An easy oatmeal cookie recipe made with peanut butter and peanut butter chips that gets mixed up in about 15 minutes or less, and baked. In 30 minutes or less, these peanut butter oatmeal cookies are ready to be dunked in a glass of milk!
Prep Time15 minutes
Cook Time10 minutes
Total Time25 minutes
Course: Dessert
Cuisine: American
Servings: 36 cookies (or 18 large)
Calories: 198kcal

Ingredients

  • 2 cups (240 g) all-purpose flour *spooned and leveled
  • 1 teaspoon baking soda
  • 1 teaspoon salt
  • ½ teaspoon cinnamon
  • 1 cup (226 g) unsalted butter melted and slightly cooled
  • 1 cup (213 g) packed light brown sugar
  • ½ cup (100 g) granulated white sugar
  • 2 large eggs
  • 2 teaspoons vanilla extract
  • ½ cup (135 g) smooth peanut butter
  • 2 cups (198 g) old-fashioned oats
  • 2 cups (340 g) peanut butter chips

Instructions

  • Preheat and prepare cookie sheets. Preheat oven to 350°F (177°C). Line a large rimmed baking sheet with parchment paper or silicone baking mat.
  • Whisk dry ingredients. In a medium sized mixing bowl whisk together flour, baking soda, salt, and cinnamon and set aside.
  • Combine wet ingredients. In a second mixing bowl stir together the melted butter and sugars. Add in your eggs and vanilla. Mix to combine. Whisk in peanut butter until smooth and combined.
  • Add in your dry ingredients. Add the flour mixture to the butter and with a wooden spoon or spatula and stir to combine. Stir just until no flour streaks remain. Be careful to not overmix.
  • Stir in the oats and mix-ins. With a rubber spatula, stir in the oats and peanut butter chips until evenly combined.
  • Scoop the cookies. Using a small cookie scoop, or tablespoon scoop the cookies into 1 ½-inch balls (about 2 tablespoons) onto prepared baking sheets about 2 inches apart. (For larger cookies I use a large scoop that holds about 1/4-cup of cookie dough and place 6-8 on a baking sheet and flatten slightly with my hand).
  • Bake and cool the cookies. Bake cookie sheet on the middle rack for 10-12 minutes, until lightly browned on the sides and edges are set. (For larger cookies bake 15-17 minutes). The centers will look soft. Remove from the oven and let cool on baking sheet for 5 minutes before transferring to a wire rack to cool completely. Remove from the cookie sheet and allow to cool on a cooling rack.

Notes

  • Storage: Cover and store these cookies at room temperature for up to 4 days.
  • Freezing: You can freeze them baked or unbaked. 
    To freeze unbaked: Scoop the cookies onto a cookie sheet, and freeze solid. Then place into a sealable plastic bag. You can bake frozen, without thawing, but add on a few extra minutes of baking time.
    To freeze baked: Allow the cookies to cool completely and then place in a freezer bag and freeze for up to 3 months. Thaw at room temperature before enjoying.  
  • Peanut butter - I used smooth peanut butter but chunky peanut butter would also work. I haven't used with a natural peanut butter (the kind you have to stir), so can't say if it would change the texture or not.
  • Old-fashioned oats - I prefer using old-fashioned oats for the bigger texture but quick oats would also work.
  • Peanut butter chips - These add extra peanut butter flavor but you could always swap out and use chocolate chips.

Nutrition

Calories: 198kcal | Carbohydrates: 23g | Protein: 4g | Fat: 10g | Saturated Fat: 6g | Trans Fat: 1g | Cholesterol: 25mg | Sodium: 136mg | Potassium: 57mg | Fiber: 1g | Sugar: 13g | Vitamin A: 171IU | Vitamin C: 1mg | Calcium: 13mg | Iron: 1mg