The only five ingredients that you need is a box of yellow cake mix, peanut butter, eggs, vegetable oil, and Halloween themed M&Ms. Mix all of the ingredients together until smooth. Press the cookie dough evenly into a greased square baking dish. Bake until the center of the cookie bars comes out clean with a toothpick. Let cool completely before cutting into bars and serving.
Cake Mix Peanut Butter Halloween M&M Cookie Bars
Ingredients
- 1 ( 15 oz.) box yellow cake mix
- 1/2 cup peanut butter
- 2 large eggs
- 1/2 cup vegetable oil
- 1 cup Halloween M&Ms
Instructions
- Preheat the oven to 350 F. In a large bowl, mix together cake mix, peanut butter, eggs, and vegetable oil until smooth. Fold in the M&Ms.
- Evenly press the cookie dough into a greased 8-inch square baking dish. Bake for 20-25 minutes.
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