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Melt-in-Your-Mouth Magic: M&M Cookie Bar Delights

M&M Cookie Bar

These M&M Cookie Bars are so much fun to make because of the rainbow of colors that they feature. Both children and adults like them to a great extent. If you enjoy my M&M Cookies, I do not doubt you will enjoy the bars.

The bars are gooey, chewy, and laden with colorful M&M candies and chocolate chips. They also have a sweet flavor. To give the bars something extra, I always finish them with a light dusting of flaky sea salt.

Try these cookie bars the next time you need a simple treat. I can assure you that the pan will be consumed very rapidly. They are challenging to say no to!


  • Flour — I make use of all-purpose flour that has not been bleached.
  • Cornstarch—to ensure that the bars remain chewy!
  • The cookie bar dough calls for salt, and I put kosher salt in it.
  • Check the expiration dates on the baking soda and baking powder containers to ensure that they are still OK to use.
  • Butter that has not been salted at room temperature. When you press your thumb into the stick of butter, there should be very little give. It would help if you were sure that it is not too soft.
  • When measuring granulated sugar or brown sugar, make sure to always pack the brown sugar.
  • Eggs – make sure you use the big ones!
  • Extract of Pure Vanilla: You should only use pure vanilla when baking!
  • M&Ms – the milk chocolate kind is my go-to most of the time. M&M’s, but you could substitute peanut butter, dark chocolate, peanut, caramel, brownie, mini, or any of the other delicious M&M candy flavors instead!
  • Chocolate Chips: I prefer semi-sweet chocolate chips, but you could also use either milk or dark chocolate chips.
  • Salt flakes from the sea, perfect for sprinkling on bars!
M&M Cookie Bar

How to Make M&M Cookie Bars

  • Turn the temperature in the oven up to 350 degrees F. Prepare a baking dish measuring nine by 13 inches by lining it with parchment paper and greasing it very lightly. Put to the side.
  • Using a whisk, flour, cornstarch, salt, baking soda, and baking powder should be mixed in a small bowl. Put to the side.
  • Butter, light brown sugar, and regular sugar should be thoroughly mixed together in the bowl of a stand mixer using the paddle attachment. In cases where it is essential to do so, use a spatula to scrape the sides of the bowl.
  • After adding the eggs and vanilla, continue beating until everything is incorporated.
  • After turning off the mixer, the dry components should be added. Stir on low speed until all of the ingredients are almost completely incorporated. Take care not to overmix.
  • Mix the chocolate chips and one cup of M&M using a stirring spoon.
  • Put the cookie dough to work by pressing it onto the bottom of the pan that has been prepared. Add the remaining 14 cups of M&Ms to the top of the bars so that they seem even more colorful and lovely. Salt flakes from the sea should be sprinkled on top.
  • Bake for twenty to twenty-four minutes until the sides are firm, and the top turns golden brown. Check on it early to be safe because each oven is unique. The bars must be baked thoroughly, but not for too long!
  • Take the pan out of the oven and set it on a cooling rack made of wire.
  • Before cutting the bars into squares, let them cool completely in the pan first.
  • To remove the cookie bars from the pan, use the parchment paper to do so, and once removed, cut them into squares before serving. A helpful hint is that the bars complement ice cream well.

Holiday M&M Cookie Bars

Because of the wide range of possible color combinations, these bars are some of my favorites to bake for various festivals and other special occasions.

You might, for instance, use holiday M&Ms in festive colors like red and green for Christmas cookie bars, pastel M&Ms for Easter, red, white, and blue M&Ms for the Fourth of July, and Halloween M&Ms for a frightful treat in the autumn!

For game day, you might either wear the colors of your favorite team or the colors of your school.

These bars are the ideal sweet treat for get-togethers such as potlucks, parties, and tailgates.

How to Store & Freeze

Keeping: Once completely cooled, place the cookie bars in an airtight container and leave them on the counter for up to four days.

When you are ready to freeze the cookie bars, cut them into squares and place them in a freezer bag or container once they have cooled. Identify, as well as date. Put it in the freezer for up to two months. Defrost and have some fun!

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