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M&M Cake Mix Cookie Bars (just 5 ingredients)

These super easy M&M Cake Mix Cookie Bars are perfect for Valentine’s Day, or change up the colors to serve for the Big Game!

It’s an easy recipe that makes a good last-minute treat for that party or family gathering. They also make a special treat for the kids’ lunchboxes the week of Valentine’s.

Cake Mix Cookie Bars recipe - super easy with just 5 ingredients

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What do you need for M&M cake bars?

These super easy M&M Cake Mix Cookie Bars only have five ingredients, and one is water! They’re quick to make, so I like to use this cake bars recipe when I need a last-minute treat to bring to a party or potluck.

These happen to be yellow cake mix cookie bars, but you can switch up the flavor of cake mix if you’d like. Try using chocolate, or even a strawberry cake mix to make the bars pink. And of course–you can substitute a gluten free cake mix if needed.

So what are the 5 ingredients? Your preferred cake mix, eggs, water, oil and M&Ms. That’s it!

In fact, another 5 ingredient, pretty pink Valentine’s dessert is this Potluck Strawberry Jello Cake.

Are cake mix bars a versatile recipe?

That’s what I love about simple recipes like this. Just change up the colors of your M&Ms to match your favorite team’s colors, and put them out with your Game Day food. Or use the colors of whatever birthday party theme you’ve chosen. For example, switch to spring/Easter colors for these vanilla cookie bars.

Of course, you can always replace the M&Ms with any number of mix-ins. What about using another type of candy, or one of your favorite kinds of chocolate chips? I just love how versatile these easy cake mix cookie bars are.

Super Easy Cake Mix Bars for Valentines day

To get the brightest colors, press the M&Ms into the top of the batter. If you’re putting these out at a party, it’s especially nice for the colors to show.

Another option is to fold the candy gently into the batter before filling the pan. It’s not quite as pretty that way, but then the M&Ms are distributed throughout the top and bottom.

Most kids gobble these cake mix bars up before noticing where exactly the M&Ms are placed!

red white and pink M&M candies with scrabble tiles spelling LOVE

More Valentine Sweets

Yield: 24

M&M Cake Mix Cookie Bars

M&M Cake Mix Cookie Bars

This easy recipe for M&M Cake bars is just 5 ingredients and makes a delicious Valentine dessert.

Prep Time 10 minutes
Cook Time 25 minutes
Total Time 35 minutes


  • 1 box yellow cake mix (or substitute your favorite flavor)
  • 2 eggs
  • 1/4 cup water
  • 1/3 cup oil
  • 1 cup M&Ms


  1. Mix cake mix and wet ingredients together, using a hand mixer, until smooth.
  2. Spread into a 9x12 baking dish, prepared with non-stick cooking spray.
  3. Sprinkle the M&Ms on the top and press lightly into the batter (see note below for alternative).
  4. Bake 20-25 minutes at 350 degrees, or until edges are golden brown and pulling away from pan.
  5. Let cool completely before cutting into bars.

Nutrition Information:



Serving Size:


Amount Per Serving: Calories: 157Total Fat: 6gSaturated Fat: 2gTrans Fat: 0gUnsaturated Fat: 4gCholesterol: 17mgSodium: 170mgCarbohydrates: 24gFiber: 1gSugar: 15gProtein: 2g

This recipe is linked up to Craftastic Monday at Sew Can Do and Pin Party at Pin Junkie.


Tammy @ creativekkids

Wednesday 28th of January 2015

Easy is the best! Thanks for linking up to last week's Creative K Kids' Tasty Tuesdays Party. I've pinned your post to the Tasty Tuesdays' Pinterest Board.

Andrea B.

Wednesday 21st of January 2015

These look so good! i might have to give them a try. Perfect for Valentine's Day - or my daughter's birthday which is coming up soooooon.

I'm always worried when the M&Ms crack, though. I tend to pop them in between so they don't visibly crack. ;)

Sylvia Seal

Wednesday 21st of January 2015

I love the tip about getting the brightest colors! I pinned it !

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