Monster Cookie Bars - this easy bar cookie recipe is full of peanut butter, oats, and tons of M&Ms! EVERYONE loves these, especially with ice cream!
Course Dessert
Cuisine American
Keyword cookie bar
Prep Time 15minutes
Cook Time 30minutes
Total Time 45minutes
Servings 24bars
Calories 322kcal
Author Dorothy Kern
Cost $8
Ingredients
½cup(113 g) unsalted buttersoftened
1cup(268 g) peanut butter
¾cup(150g) packed brown sugar
½cup(100g) granulated sugar
2large eggs
1teaspoonvanilla extract
½teaspoonbaking soda
½teaspoonsalt
¾cup(93g) all-purpose flour
3cups(256g) quick cooking oats
1cup(170g) chocolate chips
2cupsM&Msany kind, I used regular and peanut butter
Instructions
Preheat oven to 350°F. Line a 9x13” pan with foil and spray with nonstick cooking spray.
Beat butter and peanut butter with a hand or a stand mixer until smooth. Mix in both sugars until creamy. Add eggs, vanilla, baking soda, and salt and mix until smooth, then slowly mix in the flour and oats. Stir in the chocolate chips and M&Ms.
Press cookie dough into the prepared pan. If desired, sprinkle more M&Ms on top for decoration. Bake for 22-25 minutes or just until the edges are golden brown. Cool before cutting into bars.
These are great served as bars or as an ice cream sundae! Store in an airtight container for up to 3 days or freeze for up to one month.