My Favorite Monster Cookies

These monster cookies are thick, chewy, colorful, and completely irresistible—the kind of cookie that disappears fast at bake sales, family gatherings, or straight off the cooling rack. They’re loaded with peanut butter, oats, chocolate chips, and M&M’s for that perfect sweet-and-salty crunch in every bite.

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Course: Dessert

Cuisine: American

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Prep Time: 30

Cook Time: 45

Total Time: 1 15

Servings: servings

Calories: 162kcal

Equipment

Ingredients

½ cup Butter
½ cup Peanut Butter
¾ cup Brown sugar
¼ cup Granulated sugar
1 tsp Vanilla
2 large Eggs
1 tsp Baking soda
2 tsp Cornstarch
1 cup Old Fashioned Oatmeal
1 ½ cups All-purpose flour
1 cup Milk chocolate chips
1 cup M&M's

Instructions

With a mixer or a wooden spoon, cream together the butter and peanut butter. Add in the brown sugar, granulated sugar, vanilla, and eggs. Mix until the batter is smooth and silky looking.
Mix in the baking soda, cornstarch, and oatmeal. Add in the flour and mix well.
Lastly, by hand mix in the M&M candies and chocolate chips.
Place the dough in the fridge to chill while preheating the oven to 350 degrees. If using a baking stone, place it in the oven as it preheats.
Using a medium cookie dough scoop, drop the cookies a couple inches apart onto the baking stone or cookie sheet. Do not press flat. They will flatten out somewhat as they bake.
Bake for 10-11 minutes or until slightly golden brown around the edges.
Immediately remove from the baking stone or cookie sheet to cool.
Store in an airtight container. They freeze well too.

Video

Notes

Nutritional information is an estimate. It will vary based the brands of ingredients used and on your cooking methods.

These are the directions for how I make the cookies.

Any baking sheet can be used instead of a baking stone. I think the stone bakes the cookies more evenly.

The dough does not have to be chilled, but I think the chilled dough helps make a softer cookie center with a slightly crisp outside.

Nutrition