These M&M Chocolate Bars are one of those desserts that always get requested again and again! They are soft, chewy, and layered with everything we love – a buttery oat crust, a rich chocolate center, and colorful M&M’s on top!
Because Everything is Better with M&M’s!
If you’re looking for a dessert that is easy to make, fun to eat, and guaranteed to disappear fast, these M&M Chocolate Bars are it! With a buttery oat crust, a rich and gooey chocolate center, and colorful M&M’s baked right on top, this recipe is a nostalgic classic that never goes out of style.
Whether you’re baking for a party, a potluck, a school event, or just a cozy weekend treat, these bars check every box!
Why this Recipe Works:
- Quick & Easy – Minimal prep and simple steps.
- Pantry Staples – Nothing fancy or hard to find.
- Perfect Texture – Soft, chewy, and slightly gooey.
- Kid-Friendly – I love how there are bright colors and chocolate in every bite!
- Customizable – Easy to adapt for holidays or mix-ins.
Looking for more ways to use M&M’s? Everyone loves LEGO Rice Krispie Treats, Easter Bunny M&M Cookies, and Reindeer Peanut Butter Cup Cookies, too!
Ingredients You’ll Need:
- 1 1/2 cups Flour – Forms the structure of the bars so they hold together.
- 1 1/2 cups Quick Oats – Adds chewy texture and helps create a sturdy oat crust and topping.
- 1 cup Brown Sugar – Sweetens the bars and adds moisture with a rich, caramel-like flavor.
- 1 tsp Salt – Balances the sweetness and enhances the chocolate flavor.
- 1 cup + 2 tbsp Butter (Softened) – Binds the crust and topping together while adding richness and tenderness.
- 1 (14 oz) can Sweetened Condensed Milk – Acts as the creamy glue, creating a gooey center as it bakes.
- 1 (11.5 oz) bag Chocolate Chips – Melt into the filling for a smooth, chocolatey layer.
- 1 cup M&M’s – Adds crunch, color, and extra chocolate throughout the bars.
How to Make M&M Chocolate Bars
- Preheat oven to 350 degrees. Spray 9 x 13 pan with non-stick spray and set aside.
- In a large bowl, mix together 1 1/2 cups flour, 1 1/2 cups quick oats, 1 cup brown sugar, 1 tsp salt, and 1 cup softened butter. Remove 1 cup of the mixture and set aside.
- Press the remaining mixture into the bottom of the prepared baking dish.
- In a medium sauce pan, combine 1 (14 oz) can sweetened condensed milk, 1 (11.5 oz) bag chocolate chips, and remaining 2 tbsp butter over 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.
My Best Tips:
- Use Softened, Not Melted, Butter – Softened butter blends evenly into the oat mixture and helps create a tender, crumbly crust. Melted butter can make the base greasy and too dense.
- Melt the Chocolate Layer Slowly – When heating the chocolate chips, sweetened condensed milk, and butter, use low heat and stir constantly. This prevents scorching and keeps the filling smooth and glossy.
- Line Your Pan with Parchment Paper – This makes it much easier to lift the bars out cleanly and cut tidy squares without sticking.
- Don’t Over Bake – Over baking can dry out the bars. They firm up as they cool.
More Treats with M&M’s:
- Soft & Chewy M&M Cookies
- M&M Chocolate Candy Clusters
- Edible M&M Cookie Dough
- Monster Cookie Energy Balls
M&M Chocolate Bars
Chewy M&M Chocolate Bars made with oats, gooey chocolate, and sweetened condensed milk! An easy one‑pan dessert everyone loves!
Ingredients
- 1 1/2 cups Flour
- 1 1/2 cups Quick Oats
- 1 cup Brown Sugar
- 1 tsp Salt
- 1 cup + 2 tbsp Butter (Softened)
- 1 (14 oz) can Sweetened Condensed Milk
- 1 (11.5 oz) bag Chocolate Chips
- 1 cup M&M's
Instructions
- Preheat oven to 350 degrees. Spray 9 x 13 pan with non-stick spray and set aside.
- In a large bowl, mix together flour, quick oats, brown sugar, salt, and softened butter. Remove 1 cup of the mixture and set aside.
- Press the remaining mixture into the bottom of the prepared baking dish.
- In a medium sauce pan, combine sweetened condensed milk, chocolate chips, and remaining 2 tbsp butter over 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.
Notes
Recipe Credit:Lil' Luna
Nutrition Information:
Yield:
24Serving Size:
1Amount Per Serving: Calories: 54Total Fat: 1gSaturated Fat: 1gUnsaturated Fat: 1gCholesterol: 2mgSodium: 36mgCarbohydrates: 9gFiber: 1gSugar: 2gProtein: 1g
The nutrition facts were automated by the Nutritionix database. Because it's done by automation, it is best practice to double check for accuracy.
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