These M&M Cookie Bars transform classic cookie dough into something even more irresistible - a pan of soft, chewy squares loaded with colorful M&Ms and melty chocolate chips. With an incredibly tender crumb and perfectly crispy edges, they deliver all the comfort of homemade cookies without the fuss of scooping and rolling.
The first time I made these for my nephew's birthday party, the kids were drawn to the rainbow of colors, while the adults couldn't resist the buttery, chocolatey aroma. Now they're requested at every family gathering.
Essential Ingredients
- Melted butter: Creates that irresistibly chewy texture and rich flavor. Let it cool slightly before mixing.
- Cornstarch: The secret to ultra-soft bars that stay tender for days.
- Brown sugar: Use dark brown for deeper caramel notes and extra moisture.
- M&Ms: Regular size gives the best texture, but minis work too. Save the prettiest ones for the top.
- Chocolate chips: The combination of chips and M&Ms creates delicious chocolate pockets throughout.
- Pure vanilla extract: Splurge on the good stuff - it makes a noticeable difference.
Creating Cookie Bar Magic
- Step 1:
- Start by lining your pan completely - the parchment overhang is crucial for easy removal.
- Step 2:
- Melt your butter slowly to prevent it from getting too hot.
- Step 3:
- When mixing sugars with melted butter, whisk until the sugar starts dissolving.
- Step 4:
- Beat in your eggs one at a time until fully incorporated.
- Step 5:
- Combine dry ingredients separately to ensure even distribution of leaveners.
- Step 6:
- Fold in the flour mixture gently - overworking leads to tough bars.
- Step 7:
- Save about 1/2 cup each of M&Ms and chips for the top.
- Step 8:
- Spread the dough evenly with an offset spatula.
- Step 9:
- Press additional candies into the top before baking.
- Step 10:
- Watch for golden edges and a slightly puffed center.
- Step 11:
- The center might look slightly underbaked - that's perfect!
- Step 12:
- Add extra M&Ms while still warm for that bakery-style look.
- Step 13:
- Let cool completely for clean cuts.
Every time I make these, I'm reminded of childhood birthday parties and bake sales. There's something magical about those colorful candies nestled in soft cookie dough.
Perfect Party Tips
- Cut smaller squares for bite-sized treats.
- Stack with wax paper between layers.
- Transport in the baking pan for protection.
The way these bars combine the best parts of cookies and brownies makes them irresistible to both kids and adults.
These cookie bars prove that sometimes the simplest recipes bring the most joy. Whether it's for a school event, holiday gathering, or just because, they never fail to make people smile.