Chocolate Chip Cookie Bars Recipe

If you’re looking for a fun twist on a classic favorite, these Chocolate Chip Cookie Bars bring all the nostalgia of chocolate chip cookies into one easy, sliceable pan of pure joy. Thick, chewy, and bursting with melty chocolate chips and colorful M&M’s, they are perfectly sweet and impossibly satisfying. Whether you’re baking for a crowd or just want a quicker way to enjoy that beloved cookie flavor, these bars deliver every time, making them an irresistible treat you’ll definitely want on your go-to dessert list.

this Recipe

Ingredients You’ll Need

This recipe relies on a handful of simple but essential ingredients that each play a crucial role in creating the perfect balance of texture and flavor. From the creamy butter that adds richness to the brown sugar bringing moisture and depth, every element is thoughtfully chosen.

• 1 cup salted butter, softened: Provides a rich, creamy base that helps keep the bars moist and tender.
• 1 cup granulated sugar: Adds sweetness and contributes to a slightly crisp edge on the bars.
• 1 cup light brown sugar, packed: Adds moisture and a subtle caramel flavor, enhancing chewiness.
• 2 large eggs: Bind everything together and add structure to the bars.
• 1 tablespoon vanilla extract: Brings warmth and depth that enhances the chocolate flavors.
• 3 cups all-purpose flour: The backbone for the chewy texture and structure of the bars.
• 1 tablespoon cornstarch: Softens the texture, making these bars delightfully tender.
• 1 teaspoon baking soda: Helps the bars rise just enough for a soft, cakey interior.
• 1 teaspoon salt: Balances the sweetness and enhances overall flavors.
• 1½ cups semi-sweet chocolate chips: Classic gooey pockets of rich chocolate throughout.
• 1 cup M&M’s: Adds a colorful crunch and playful twist to the classic cookie bar.

How to Make Chocolate Chip Cookie Bars

Step 1: Prepping Your Oven and Pan

Start by preheating your oven to 350°F (175°C). Line a 9×13-inch baking pan with parchment paper so that you can easily lift the bars out later. This simple prep step is key to an easy release and clean slices.

Step 2: Creaming the Butter and Sugars

In a large bowl, cream together the softened salted butter, granulated sugar, and light brown sugar until the mixture is light and fluffy. This fluffy texture is what gives the bars their tender crumb, so don’t rush this part—it’s worth the extra few minutes.

Step 3: Adding Eggs and Vanilla

Beat in the eggs one at a time, making sure each is fully incorporated before adding the next. Then stir in the vanilla extract, which will infuse the bars with a wonderful aroma and flavor.

Step 4: Combining Dry Ingredients

In a separate bowl, whisk together the all-purpose flour, cornstarch, baking soda, and salt. This blend ensures the perfect chewiness while the cornstarch keeps the texture soft.

Step 5: Mixing Wet and Dry Ingredients

Gradually add the dry ingredients to the butter and sugar mixture, stirring just until combined. Over-mixing can make the bars tough, so stop as soon as you see no more flour.

Step 6: Folding in Chocolate Chips and M&M’s

Fold in 1½ cups of semi-sweet chocolate chips and 1 cup of M&M’s gently into the dough, reserving a small handful of each for sprinkling on top before baking. This adds eye-catching color and delicious pockets of sweetness right on the surface.

Step 7: Baking the Bars

Spread the dough evenly into your prepared pan and sprinkle the reserved chocolate chips and M&M’s on top. Bake for 22 to 25 minutes, until the edges turn a lovely golden brown and the center is set but still soft. Don’t overbake, as you want these to stay chewy!

Step 8: Cooling and Slicing

Allow the bars to cool completely in the pan—which usually takes about 20 minutes—before slicing into 15 generous squares. Cooling helps the bars set up perfectly for clean cuts and better texture.

How to Serve Chocolate Chip Cookie Bars

Garnishes

For an extra bit of flair, dust these bars lightly with powdered sugar or drizzle some melted chocolate over the top. A sprinkle of flaky sea salt can also be a delightful contrast to the rich sweetness, elevating the flavors beautifully.

Side Dishes

These bars pair amazingly well with a scoop of vanilla ice cream or a dollop of whipped cream. For a simple and satisfying combo, serve with a cold glass of milk—it’s classic and hard to beat. Fresh berries on the side also add a juicy, tangy complement to the sweet and chocolatey bars.

Creative Ways to Present

Try cutting the bars into bite-sized squares and serving them on a skewer for a fun party snack. You can also sandwich them with peanut butter or Nutella for an indulgent treat. Wrapping individual bars in parchment paper tied with a ribbon makes for perfect homemade gifts that anyone would adore.

Make Ahead and Storage

Storing Leftovers

Keep your leftover Chocolate Chip Cookie Bars fresh by storing them in an airtight container at room temperature. They’ll stay delicious for up to five days, maintaining their soft and chewy texture.

Freezing

If you want to save these for longer, they freeze wonderfully. Wrap tightly in plastic wrap and then aluminum foil, or place in a freezer-safe container. They can be frozen for up to two months. When you’re ready to enjoy, thaw overnight in the fridge.

Reheating

Warm up a bar briefly in the microwave for about 10 to 15 seconds (depending on your microwave’s power) to bring back that delightful melty chocolate feel. You can also pop a bar in a warm oven (around 300°F) for 5 to 7 minutes if you prefer a slight crisp outside with a soft center.

FAQs

Can I use a different type of chocolate?

Absolutely! Semi-sweet chips are classic, but feel free to swap in milk chocolate, dark chocolate, or even white chocolate chips. Each will give the bars a unique flavor twist.

What if I don’t have cornstarch?

Cornstarch helps keep the cookie bars soft and tender, but if you don’t have any, you can leave it out. Just expect a slightly firmer texture.

Can I make these bars gluten-free?

To enjoy gluten-free Chocolate Chip Cookie Bars, substitute the all-purpose flour for a gluten-free flour blend that you trust, making sure it includes a binding agent like xanthan gum for the best texture.

Is it possible to make these dairy-free?

Yes! Swap the butter for a plant-based margarine or coconut oil, and use dairy-free chocolate chips and M&M’s to keep it vegan-friendly and just as tasty.

Can I add nuts to this recipe?

Definitely! Chopped walnuts, pecans, or almonds make a great crunchy addition. Fold them in with the chocolate chips and M&M’s for an added layer of texture and flavor.

Final Thoughts

There’s something so comforting and utterly delicious about these Chocolate Chip Cookie Bars that makes them a staple for every baker’s repertoire. They’re incredibly easy to whip up and perfect for sharing, gifting, or simply indulging whenever the chocolate chip cookie craving strikes. Trust me, once you try these, you’ll be reaching for this recipe time and time again. Go ahead, bake a batch and enjoy every chewy, chocolate-loaded bite.