Oatmeal Chocolate Chip Cookie Bars

These oatmeal chocolate chip cookie bars are soft, chewy and always a hit! With just a few minutes of prep, they’re out of the oven quickly!

cup up chocolate chunk bars stacked in a white ramekin

I’ve been making these easy oatmeal chocolate chip cookie bars for almost 20 years. Talk about a tried-and-true favorite!

They are easy, no-fuss, and they will always be one of my favorite cookie bars ever. 

Soft and chewy, they are a perfect alternative to scooping out tray after tray of oatmeal chocolate chip cookies. I just love cookies in bar form. I really do.

cut chocolate chip bar laying next to white bowl

Oatmeal Chocolate Chunk Bars

Yield: 9X13-inch pan
Prep Time: 20 minutes
Cook Time: 20 minutes
Total Time: 40 minutes


  • 3/4 cup (6 ounces, 12 tablespoons) butter, softened OR melted (see note)
  • 1/2 cup (3.75 ounces) granulated sugar
  • 1/2 cup (3.75 ounces) lightly packed brown sugar
  • 1 large egg
  • 1 egg yolk
  • 1 teaspoon vanilla extract
  • 1 teaspoon baking soda
  • 1/4 teaspoon salt
  • 1 3/4 cups (8.75 ounces) all-purpose flour
  • 1 cup (3.5 ounces) quick oats or old-fashioned rolled oats
  • 2 cups (12 ounces) chocolate chips or chocolate chunks


  1. Preheat oven to 350 degrees F. Lightly coat a 9X13-inch baking pan with cooking spray or line with parchment and lightly grease parchment and set aside.
  2. In a large bowl, add the butter, granulated sugar, brown sugar, egg, egg yolk, baking soda and salt, and mix with an electric mixer (handheld or stand mixer) until well-combined.
  3. Add the flour, oats and chocolate chips and mix until evenly combined.
  4. Press the batter into the prepared pan and bake for 18-20 minutes. Don't overbake! These bars are best underbaked by just a bit.


Butter: this recipe works just fine with softened OR melted butter. To take it up a notch, try browning the butter first. Amazing! Also, I always use salted butter.

Doubling: this recipe doubles great to fit in a half sheet pan (11X17-inch rimmed baking sheet).

Chocolate Chips: so many variations can be subbed in for these bars: peanut butter chips, butterscotch chips, mint chips.

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Recipe Source: adapted from 24 Hour Menu