Print

Giant Monster Cookies with Peanut Butter, Oats, and Chocolate M&Ms Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

4.3 from 4 reviews

These Giant Monster Cookies are a deliciously chewy and chunky treat packed with creamy peanut butter, oats, chocolate chips, and colorful M&M’s. Perfectly soft on the inside with slightly crisp edges, they make a fun and satisfying snack or dessert for cookie lovers everywhere.

Ingredients

Wet Ingredients

  • 2 cups creamy peanut butter
  • 2/3 cup butter, softened
  • 4 large eggs, room temperature
  • 1 teaspoon vanilla extract
  • 1 teaspoon light corn syrup

Dry Ingredients

  • 1-1/3 cups sugar
  • 1-1/3 cups packed brown sugar
  • 2-1/2 teaspoons baking soda
  • 6 cups old-fashioned oats

Add-ins

  • 1 cup semisweet chocolate chips
  • 1 cup milk chocolate M&M’s

Instructions

  1. Cream Ingredients: In a large bowl, cream together the peanut butter, softened butter, sugar, and brown sugar until the mixture is light and fluffy, about 5 to 7 minutes.
  2. Add Eggs and Flavors: Beat in the eggs one at a time, then mix in the baking soda, vanilla extract, and light corn syrup until fully combined.
  3. Incorporate Oats and Mix-ins: Stir in the old-fashioned oats thoroughly, then fold in the semisweet chocolate chips and milk chocolate M&M’s evenly throughout the dough.
  4. Chill Dough: Cover the bowl with plastic wrap and refrigerate the dough for 1 hour to allow it to firm up, which helps maintain cookie shape during baking.
  5. Preheat Oven and Prepare Baking Sheets: Preheat the oven to 350°F (175°C). Line baking sheets with parchment paper or leave ungreased as specified.
  6. Shape and Bake Cookies: Drop the dough by 1/4 cupfuls onto the baking sheets about 3 inches apart to allow for spreading. Bake in the preheated oven for 14 to 18 minutes, or until the edges are lightly browned.
  7. Cool Cookies: Remove the cookies from the oven and let them cool on the baking sheets for 5 minutes before transferring them to wire racks to cool completely.
  8. Store Properly: Once cooled, store the cookies in an airtight container to maintain freshness.

Notes

  • For best results, use room temperature eggs to ensure smooth batter incorporation.
  • Chilling the dough helps prevent the cookies from spreading too much while baking.
  • You can substitute peanut butter with almond or sunflower seed butter for a different flavor or nut-free option.
  • Store cookies at room temperature for up to a week or freeze for longer storage.
  • If you prefer a crispier cookie, bake closer to 18 minutes; for softer cookies, aim for 14 minutes.