I am not sure why monster cookies are called monster cookies; if I were to have named them, I probably would have called them 'everything-delicious-that-can-be-crammed-into-a-cookie' cookie or something along those lines ;) With chocolate, peanut butter, oats, and M&Ms, what is not to love?! I first enjoyed these cookies at a small group several years ago and (politely) informed the hostess that I simply could not leave her home until I had the recipe. So, thank you, Susan, for obliging my request. These are a favorite in our home and if you make them, I hope that you will enjoy them too!
Yield: ~10 dozen cookies (this is a LOT of cookies, so either stash some dough away in the freezer for later, share some with a friend, have a party, or cut the recipe in half)
- 1 lb brown sugar
- 2 c sugar
- 1 lb (4 sticks) butter
- 6 eggs
- 9 c oats
- 1 TBSP vanilla
- 1 TBSP Karo syrup
- 4 tsp baking soda
- 1 1/2 lb (24 oz jar) peanut butter (I like to use Smuckers Natural Peanut Butter, as it tastes great and comes out of the jar easily using a rubber spatula)
- 1 large bag of M&Ms (I like to use peanut butter M&Ms or the mini M&Ms)
- 1 large bag of chocolate chips (again, I like to use the mini chocolate chips)
- Using an electric mixer, cream the butter, sugar, brown sugar, and eggs. Next, add in the Karo syrup, peanut butter, vanilla, and baking soda.
- If your mixing bowl is large enough, add in the remaining ingredients (oats, M&Ms, and chocolate chips) and mix until just combined. If your mixing bowl is NOT large enough, transfer the ingredients to a larger bowl and add in the remaining ingredients using a rubber spatula.
- Cover and chill dough for at least 4 hours (I often will let the dough chill overnight, but that length of time is not necessary) to keep the cookies from spreading when baking.
- Pre-heat oven to 350F; bake on an ungreased cookie sheet/baking stone for 8-10 minutes. Remove the baking sheet from the oven and leave the cookies on the baking sheet for ~2 minutes before transferring the cookies to a cooling rack. Enjoy!