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Close up of chewy valentine monster cookies with chocolate chips, peanut butter, oats, and pink and red valentine M&Ms.

Valentine Monster Cookies

  • Author: Laura Bolton - Fork Knife Swoon
  • Prep Time: 20
  • Cook Time: 25
  • Total Time: 45 minutes
  • Yield: 14 Cookies 1x
  • Category: Baking, Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian


Soft and chewy Valentine monster cookies, that combine everything to love about classic chocolate chip cookies, along with peanut butter, oats, and festive pink and red M&Ms. Easy to make (with no chill time!), and adaptable to different seasons and holidays.


  • 11/2 cups (180g) all-purpose flour
  • 1/4 cup (40g) old-fashioned rolled oats
  • 1 tsp baking powder
  • 1/2 tsp baking soda
  • 1 tsp Kosher salt
  • 1/2 cup (113g or 1 stick) unsalted butter, softened to room-temperature ¹
  • 3/4 cup (150g) light brown sugar, packed
  • 1/4 cup (50g) granulated sugar
  • 1 tsp pure vanilla extract
  • 1 large egg
  • 2 Tbsp (32g) creamy peanut butter
  • 1.5 oz bittersweet chocolate, chopped
  • 1/2 cup pink and red M&Ms, divided
  • 1/4 cup semisweet chocolate chips


  1. Preheat the oven to 350℉. Line a couple of large rimmed baking sheets with parchment paper. Set aside.
  2. In a medium bowl, whisk together the flour, oats, baking powder, baking soda, and salt until well-combined. Set aside.
  3. In a stand mixer fitted with the paddle attachment, beat together the butter and sugars on medium speed until creamy and well-combined, about 2 minutes. Scrape down the side of the bowl with a spatula as needed.
  4. Add the vanilla, egg, and peanut butter, and mix until creamy and combined, another minute or so.
    Turn the mixer down to low speed, and spoon in the flour mixture until just combined and no streaks of flour remain.
  5. Stir in the chopped chocolate, 1/4 cup of the M&Ms, and the chocolate chips. The dough should be thick and slightly sticky but easily scoop able.
  6. Use a cookie scoop to scoop and shape the dough into equal 2 Tbsp sized cookie dough balls (about 55g each).
  7. Place on your prepared baking sheets, about 2 inches apart, and bake in batches for 10-12 minutes, until the edges are golden and the centers look mostly done.
  8. Remove from the oven, and immediately top each cookie with a few extra M&Ms, pressing them gently into the tops.
  9. Let rest on the baking sheet for 5-10 minutes before transferring to a wire rack to cool completely. The cookies will continue to cook and set up as they cool. Enjoy!!

Keywords: Valentine monster cookies, chewy chocolate chip cookies, peanut butter, oats, no chill, monster cookies, M&Ms, chocolate chips