Chocolate cake mix cookies with M&Ms have only 5 ingredients and come together in just about 30 minutes, including chill time!

These M&M cake mix cookies take soft and fudgy chocolate cake cookies and pack them full of M&Ms for one irresistibly delicious cookie.

If you haven’t tried making cake mix cookies before you are in for a real treat.

Chocolate cookies with M&Ms on white plate with glass of milk and more M&Ms next to them.

Once you give this recipe a try (and fall in love with the soft, cake-like cookies) give my lemon cake mix cookies, funfetti cake mix cookies, and peanut butter cookies with cake mix recipes a whirl as well.

To be honest, you can’t go wrong with any flavor of cake mix cookie!

Chocolate M&M cookies in parchment lined basket.

Ingredients

This section includes ingredient notes and substitution options. Get all measurements, ingredients, and instructions in the printable recipe card at the end of this post.

Cake mix— We used a 15.25 ounce box of Betty Crocker Super Moist Devil’s Food Cake Mix but you can experiment with other flavors as well. Chocolate Fudge is another yummy option.
Vegetable oil— or canola oil
Eggs— Allow your eggs to sit on the countertop for about 30 minutes to come to room temperature before beginning
Vanilla— Use 100% pure vanilla extract for the best taste
M&Ms— We added regular size M&Ms to our cookies but you could use mini M&Ms or even chocolate chips if you prefer.

How to Make M&M Cake Mix Cookies

This section shows you how to make the recipe with step-by-step photos and instructions. For the full printable recipe, see the recipe card below.

Step 1: Add the cake mix, oil, eggs, and vanilla to a large bowl and mix well to combine. Fold in about ⅔ of the M&Ms (no need to measure, just estimate).

Chocolate M&M Cookie Batter in mixing bowl with spatula and M&Ms next to it.

Step 2: Chill dough in the refrigerator for at least 20 minutes. (I sometimes let it chill overnight.)

Step 3: Shape the dough into 1- 1.5 Tablespoon sized balls and place on lined baking sheets about 2 inches apart. Press a few additional M&M’s into the top of the cookies.

Balls of chocolate cake mix cookie dough with colorful M&Ms pressed into the top on a parchment lined baking sheet.

Step 4: Bake for 8-10 minutes. Do not overbake.

Chocolate M&M Cookies on lined baking sheet.

Remove the cookies from the oven and allow them to cool on the baking sheet for a few minutes before transferring them to a cooling rack to cool further.

M&M Chocolate cake mix cookies on cooling rack.

Serve your chocolate M&M cookies warm or at room temperature.

Storage

Store in an airtight container at room temperature for up to 5 days.

Chocolate cake mix cookies with M&Ms in them.

M&M Cake Mix Cookie Tips

Use a cookie scoop for uniform-sized cookies.
Do not grease your cookie sheets. Use parchment paper or a silicone baking mat instead.
Don’t skip chilling– cookies made from cake mix are very soft and spread a lot while baking. Chilling the dough is necessary to help them from overspreading. Also, cake mix cookie dough is very sticky, making it difficult to form into balls. Chilling helps firm it up enough for you to be able to shape it into balls.
If you find that your cookie dough is too sticky to work with pop it back in the fridge to chill some more.
Use Easter M&Ms, Christmas M&Ms, Valentine’s Day M&Ms, 4th of July M&Ms, etc… to give chocolate M&M cookies a holiday theme. We love turning them into easy Christmas cookies!

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5 from 6 votes