Soft and chewy cookie bars made with a box of cake mix and filled with oats, peanut butter, chocolate chips, and M&Ms. These easy chewy cookie bars make the perfect easy treat to bake for just about any holiday or occasion. Everyone will love the delicious chocolate and peanut butter flavors.
The cookie dough is made by mixing all of the ingredients together in a large bowl until smooth. Evenly spread the cookie dough into a greased square baking dish until smooth. Bake until the cookie bars come out clean with a toothpick. Let cool completely before cutting into bars and serving.
Cake Mix Monster Cookie Bars
Ingredients
- 1 ( 15 oz.) box yellow cake mix
- 1 cup quick oats
- 1/2 cup peanut butter
- 2 large eggs
- 1/2 cup vegetable oil
- 1 cup chocolate chips
- 1 cup M&Ms
Instructions
- Preheat the oven to 350 F. In a large bowl, mix cake mix with oats, peanut butter, eggs, and vegetable oil until smooth. Fold in the chocolate chips and M&Ms.
- Evenly press the cookie dough into a greased 8-inch square baking dish. Bake for 20-25 minutes.
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