Easy Chocolate Duo Bars

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Chocolate Duo Bars start with a cake mix and are not too sweet.

These easy chocolate duo bars are one of the easiest dessert bars or treats you will make. First, they start with a cake mix, so it really doesn’t get easier.

A few weeks ago I went looking for a treat to send in to my son’s advisory meeting at school. These meetings happen bi-weekly and each student is assigned a week for snacks. I wasn’t given much notice that it was our turn for snack so I had to work with what I had on had.

Not wanting to make a trip to the store, I turned to A Taste of Home and found this recipe which is called yummy chocolate bars on that website. I decided to update the name because my son, actually, renamed them. They are two colors so he called them duo bars.

Chocolate Duo Bars start with a cake mix and make a great after school treat.

Originally the recipe called for a white cake mix but all I had was yellow so that’s what I used. Personally, I wouldn’t use a white mix because I think the yellow has more flavor.

Chocolate Duo Bars start with a cake mix and make a great after school treat.

These chocolate duo bars don’t look very pretty in the pan. But they are a pan of delicious vanilla and chocolate polka dots.

When you make the bars the bottom crust will be very thin so be sure to spread it evenly. When you drop the batter on top of the chocolate do so in a random manner. When you cut the bars you want a bit of both the cake and chocolate.


Chocolate Duo Bars start with a cake mix and make a great after school treat.


Looking for more recipes that start with a cake mix? Try:

Easy Cake Mix Bars

Chocolate Cake Mix Christmas M&M Cookies

Are you ready to try easy chocolate duo bars? Here’s the recipe:

Easy Chocolate Duo Bars

An easy treat that starts with a mix.
4.80 from 5 votes
Prep Time10 minutes
Cook Time30 minutes
Total Time40 minutes
Course: Cookies Bars and Brownies
Cuisine: American
Servings: 24 servings


  • 1 box yellow cake mix
  • 1/2 cup canola oil
  • 2 large eggs
  • 1/2 cup butter cubed
  • 1 cup milk chocolate chips
  • 1 can 14 ounces sweetened condensed milk


  • Preheat oven to 350 degrees F. Grease a 9 x 13-inch baking pan with butter and set aside.
  • In a large bowl, combine cake mix,oil and eggs. Stir until well combined. Press half of dough into prepared pan.
  • In a small, microwave safe bowl, melt butter and milk chocolate chips; stir until smooth. Stir in sweetened condensed milk. Pour over crust and smoothing to edges. Drop remaining dough by teaspoonfuls over top.
  • Bake until edges are golden brown, about 30 minutes. Cool completely on wire rack before cutting into bars.

Recipe Notes

Adapted from Taste of Home, originally Yummy Cookie Bars


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  1. The perfect recipe for a quick chocolate fix, I’m sure my brother would be thrilled if I’d bake it for him the next time he visits me.

  2. 5 stars
    Looks like cake mix season is here! These look so yummy…and I’ve never made anything with a cake mix, but I need to try it out. Love the chocolate throughout! Cute recipe 🙂

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