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Peanut Butter M&M Oatmeal Cookies on top of two white plates with a bottle of milk blurred in the background
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Peanut Butter M&M Oatmeal Cookies

Prep Time15 minutes
Cook Time13 minutes
Total Time28 minutes

Ingredients

  • 1 cup unsalted butter at room temperature
  • 1 cup brown sugar
  • ½ cup granulated sugar
  • 1 ½ cups creamy peanut butter not natural
  • 2 teaspoons pure vanilla extract
  • 2 large eggs
  • 1 ½ cups all-purpose flour
  • ½ teaspoon salt
  • 2 teaspoons baking soda
  • 3 cups old fashioned oats
  • 2 cups peanut butter M&M's
  • 1 cup semisweet chocolate chips

Instructions

  • Preheat oven to 350 degrees F.
  • Line two baking sheets with parchment paper.
  • In a large bowl, beat together butter, brown sugar, and granulated sugar until creamy, about 2 minutes.
  • Add peanut butter, vanilla, and eggs, and beat again until creamy, about 30 seconds, scraping down the edges as needed.
  • Add flour, salt and baking soda, beating until combined.
  • Slowly add in oats, beating until combined.
  • Stir in M&M's and chocolate chips.
  • Make approximately ¼ cup sized dough balls and place ~2 inches apart on baking sheets. I got 6 cookies on each baking sheet.
  • Bake in preheated oven for 11-13 minutes, until edges are golden. They will seem like they are not set up in the middle, but that's okay! They will cool and be deliciously chewy. Just don't overbake them!
  • Let them cool on the baking sheet for about 5 minutes and then transfer carefully with a spatula to a cooling rack. Let cool completely. Except for that one you have your eye on - eat that one warm with a glass of cold milk.
  • Repeat with remaining dough.
  • Enjoy!