Total Time
Prep 10 mins
Cook 30 mins

These are very crisp, crunchy cookies that are full of chocolatey goodness. A big hit in our house. For this recipe I recommend weighing your oats, I found that when using a measuring cup I get way too many oats as opposed to using the weight on the carton. I also used a medium cookie scoop to measure out the cookies (probably 1/8th of a cup). Since it makes 66 cookies I recommend making some dough balls and freezing them until firm, then putting them in a freezer bag to bake at a later time. Then you can just pull out what you need and bake them. Prep time is an estimate.

Ingredients Nutrition


  1. Preheat the oven to 350.
  2. Combine the butter and peanut butter until smooth.
  3. Add brown sugar, eggs, egg whites and vanilla.
  4. Beat until smooth.
  5. Add oats, baking soda, and salt.
  6. Hand mix in chocolate chips and M&Ms.
  7. Drop spoonsfuls of dough at least 2 inches apart on cookie sheet.
  8. Bake for 15-17 minutes or until golden.
  9. Let cool for a few minutes on sheet and then put on wire rack to cool.


Most Helpful

These cookies were a disappointment - crumbly and falling apart. Helped my son make these for a 4H project - and they are not presentable for a project.

Sue Boo July 19, 2011

This was not my favorite monster cookie recipe, though it was simple, and I had all the ingredients on hand. I think it could use more flavor (perhaps more PB).

Crystal W November 21, 2010

I left out the butter and substituted 3 cups of oat meal with 3 cups of wholewheat flour. They were delish! I also offered them to guests and everybody liked them. Thank you for sharing.

Iceland November 03, 2008

Join the Conversation

  • all
  • reviews
  • tweaks
  • q & a