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Our best-loved M&M chocolate bars have chewy layers of oats and chocolate studded with M&Ms – this top-requested dessert feeds a crowd!
Our go-to Dessert
We LOVE hosting and inviting friends and family over – and of course feeding them! Which is why we love bar desserts that feed a crowd, like our best-loved M&M chocolate bars!
This dessert is a go-to and requested ALL of the time! As mentioned before, they make several servings in one batch (15 in this one) and are easy to throw together (about 10 minutes prep).
And who doesn’t love M&Ms? You could even change it up and use your favorite flavor. We LOVE Baking with M&Ms – from M&M cookies to M&M cookie cake – they’re a delicious addition to so many desserts and the perfect addition to the chewy oats in this one.
Even our local firefighters love this treat and request it each year!
WHY WE LOVE IT:
- So easy – so yummy! They are so simple and delicious. EVERYONE asks for the recipe. They’re also great with ice cream.
- The perfect treat to change up. Use different M&Ms for different holidays (or birthdays!).
- Plan ahead of time. This treat can easily be made in advance which is great for busy days.
Ingredients
PREP TIME: 10 minutes
COOK TIME: 25 minutes
- 1½ cups all-purpose flour – see How to Measure Flour
- 1½ cups quick-cooking rolled oats – also known as instant oats
- 1 cup packed light brown sugar – or dark brown sugar
- 1 teaspoon salt
- 1 cup plus 2 tablespoons unsalted butter softened, divided – see How to Soften Butter Quickly
- 1 (14-ounce) can sweetened condensed milk – NOT evaporated milk
- 1 (11.5-ounce) bag milk chocolate chips – or use semi-sweet or dark chocolate chips. Try peanut butter, white chocolate, or peanut butter chips.
- 1 cup plain M&M’s candy – or mini M&M’s, Reese’s pieces, holiday sprinkles, toffee bits
How to Make M&M Chocolate Bars
- PREP. Preheat the oven to 350°F. Grease a 9-x-13-inch baking dish and set aside, or Line the Pan with Parchment Paper.
- OAT BATTER. In a large bowl, mix 1½ cups flour, 1½ cups oats, 1 cup brown sugar, 1 teaspoon salt and 1 cup butter with a spoon. Remove 1 cup of the mixture and set aside.
- Press the remaining oat mixture into the bottom of the prepared baking dish.
- CHOCOLATE LAYER. In a medium pot, combine 1 can of condensed milk, 1 bag of chocolate chips, and the remaining 2 tablespoons of butter over medium-low heat. Stir constantly until the chips are melted and everything is mixed well.
- Pour the melted chocolate mixture over the oat layer and spread evenly. Sprinkle the reserved 1 cup oat mixture over the chocolate.
- BAKE. Top with 1 cup plain M&M’s and bake for 25–30 minutes. Let cool completely in the pan before cutting.
More Like This
Cookie Bars
More M&M Treats
M&M Brownies
35 mins
Peanut Butter M&M Cookies
17 mins
Chocolate Chip M&M Cookies
18 mins
M&M Cookie Cake
28 mins
Collections
M&M Chocolate Bars
Equipment
Ingredients
- 1½ cups all-purpose flour
- 1½ cups quick-cooking rolled oats
- 1 cup packed light brown sugar
- 1 teaspoon salt
- 1 cup plus 2 tablespoons unsalted butter softened, divided
- 1 (14-ounce) can sweetened condensed milk
- 1 (11.5-ounce) bag milk chocolate chips
- 1 cup plain M&M’s
Instructions
- Preheat the oven to 350°F. Grease a 9×13-inch baking dish and set aside.
- In a large bowl, mix flour, oats, brown sugar, salt, and 1 cup butter with a spoon. Remove 1 cup of the mixture and set aside.
- Press the remaining mixture into the bottom of the prepared baking dish.
- In a medium pot, combine condensed milk, chocolate chips, and the remaining 2 tablespoons of butter over medium-low heat. Stir constantly until the chips are melted and everything is mixed well.
- Pour the chocolate mixture over the oat layer and spread evenly. Sprinkle the reserved oat mixture over the chocolate.
- Top with M&M’s and bake for 25–30 minutes. Let cool completely in the pan before cutting.
Video
Notes
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
Recipe FAQ
Whether you make these ahead of time or wish to store leftovers, store covered on the counter for 3 days. To freeze, wrap tightly with plastic and a freezer bag for 2-3 months.
SUPER yummy, can’t go wrong with M&M’s and more chocolate! 😆
This is a family favorite of always turns out perfect 🙂
Love making these. I always get compliments!!
Great recipe they were a big hit at my golf event
Yay! I’m so happy to hear that!! Thanks for sharing. 🙂
So the recipe says “softened” butter, but in the comments it seems I was supposed to melt it? Which is the correct way?
So you will use softened butter when making the dough (1 cup). Then for the chocolate layer, you add chocolate chips, sweetened condensed milk and 2 Tbsp of butter to a saucepan and heat, so that butter will melt in with the other ingredients in the saucepan. So you kind of do both. 🙂 Hopefully that helped clear up any confusion. We have a video on this post showing how to make the bars too which can help giving a little clarification too.
Ahmayziinggg!!! I cooked them for 28 minutes. Still gooey. But I like gooey
Me too! Thank you for trying them!
So good. Who doesn’t love a good cookie bar? These are one of our favorites. We will be making today with holiday M&Ms just to make sure the sugar coma is complete. 😂
We love this recipe! I haven’t brought it anywhere where people don’t comment and say how much they like it! Totally crowd pleaser and love that it’s a bar cookie- easier to make a lot of them and fast.
One of my favorite recipes! Whenever I bring it to an event, everyone wants the recipe!
These bars are so yummy! They are very flavorful and tasty.
Glad you think so 😉 Thank you!