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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.
Do you think I can substitute butterscotch chips for the chocolate chips?
Yes! Absolutely!
These are so easy to make and even easier to eat (the entire pan if you are not careful). Highly recommend!
Absolutely one of my favorite recipe to make for the kids. They would gobble up the entire batch if I let them. So easy to make.
These are always gone quickly. So delicious, and quick fix for your chocolate cravings. I switch back and forth between milk chocolate and semi sweet.
Ooh yes, both milk and semi sweet are so tasty. I’m glad you love the bars!!
Delicious and so fun!
These look awesome! I’m baking treats to include in our free lunch summer program and I know the kids will love them! The question I have is if the chocolate layer solidifies or stays gooey. These need to be packed in the lunches to send home to the families we serve so gooey isn’t an option. Thanks so much for such yummy recipes! Can’t wait to hear from you!
Oh how fun!! I’m so glad you are able to use this recipe for something like that. Yes, the chocolate solidifies a bit, but it’s a soft solid… if that makes sense. 😉 It solidifies enough so when it is cut into a bar, it keeps its shape and the chocolate doesn’t ooze out. You can also freeze the bars before which will help them stay solid and nice for packing into lunches. Best of luck!
Thank you so much! Can’t wait to make them:)
Karen
Delicious!! Made these for my kids last night and they were a huge hit. Definitely will be making these more often. So good and easy.
Oh yay! Glad to hear the bars were a hit with your family!
Love this recipe. It’s simple and so yummy and I love that I can use different m&ms for the holidays
Love these so much. My go to dessert went I head to friends or families houses. So easy and yummy.
These are delicious! And incredibly easy to make. An easy way to get the caramel taste!
Oh my goodness. These are so yummy. My entire family ate them up over the weekend and there were none left. Will definitely be making them again soon.