Cake mix cookie bars are an easy dessert recipe with just 5 ingredients. The moist and chewy cake bars are loaded with gooey chocolate chips or change the add-ins for endless flavor combinations!
Preheat oven to 350°F. Line a 9x13" pan with parchment paper and set aside.
Combine the cake mix, 1/3 cup melted butter, 2 eggs and 1/2 teaspoon vanilla in a large bowl. Stir together until combined. Add in 1 cup chocolate chips and mix just until combined.
Scoop the dough into the prepared baking dish. Press down evenly with a piece of parchment paper, or the palm of your hand. Top with additional chocolate chips if desired. Bake for 20 minutes. The edges should be set and the center should look slightly underdone, with a few moist crumbs on a toothpick. They'll finish setting as they cool, so don't wait for them to brown.
Allow to cool in the pan for about 15 minutes. Then remove and slice into squares.
Notes
Variations: You can use pretty much any flavor of cake mix to make these cookie bar. Feel free to add in your favorite mix-ins.
Red velvet white chocolate chip: If you're a fan of red velvet cake, you're going to love this version! Use a red velvet cake mix and mix in 1 cup of white chocolate chips.
Devil's food cake: If you're a chocolate lover, use a chocolate cake mix.
M&M: You can use white or yellow cake mix for this variation. Mix in 1 cup M&M's.
Storage:Store in a covered container for up to 3 days or freeze up to 3 months.