Oatmeal Chocolate Chunk Cookie Brownies

Oatmeal Chocolate Chunk Cookie Brownies Recipe

Oatmeal Chocolate Chunk Brookies

Half oatmeal cookie and half decadent fudge brownie. ¬†A chocolate chunk brownie layered with a classic oatmeal cookie and layered with more brownie and peanut butter swirls with chocolate chunks. ¬†In case you didn’t know, this is a Brookie. ¬†A cookie + brownie = brookie. ¬†Yes, it’s a real thing and it’s delicious. ¬†I couldn’t decide what I wanted more, a cookie or brownie, so this happened. ¬†It’s one of those gourmet recipes that will cure any craving you’re having. ¬†These Oatmeal Chocolate Chunk Cookie Brownies are that good!


Simple and perfect chewy, gooey bars.  This recipe is bursting with all sorts of flavors.  Just when you get a hint of oatmeal cookie, you get a bite packed with peanut butter.  Ummm Yum, this makes me hungry just talking about it!  Just in time for weekend because I think I need to make some more and pack them on my road trip back to Wisconsin.

Oatmeal Chocolate Chunk Cookies

Don’t you just love how melted the chocolate looks? ¬†Don’t get me wrong, it is delicious and gooey. ¬†However, this is my first summer really baking in the south. ¬†For those of you that are from the south, you will know how hot and humid it stays 8 months out of the year. ¬†It’s funny because no matter how cold the thermostat is set (without breaking it) baking can get pretty uncomfortable. ¬†Think hot-mess uncomfortable. ¬†Clean up later, at night when the oven is off, hot-humid weather. ¬†The chocolate didn’t need any help melting. ¬†Oh yeah, it pretty much stayed melted the whole week while they were sitting in the cookie jar. ¬†It has been an adjustment from the cooler summer night in Wisconsin.

Honestly, this is the best combination of a cookie and a brownie. ¬†They’re pretty amazing, delicious and are seriously one of my favorite treats.



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To make a pan for yourself, assemble the brownie and oatmeal cookie recipe.  Line baking pan with foil and grease it.  Using a large spoon, drop dollops of brownie batter on the bottom.  It wont cover all of the bottom, so save about 1/2 of the batter to layer with again.  Next, generously sprinkle the oatmeal cookie dough in the all the places the brownie batter is not covering.  Sprinkle in the corners and around the brownie batter.  Then sprinkle a little over the brownie dollops, leaving 1/3 of oatmeal cookie dough aside to be used for another layer.

Using a spoon, drop remaining brownie batter into dollops in pan.  Swirl peanut butter into brownie batter and sprinkle remaining oatmeal cookie around pan to make an even layer.

Oatmeal Chocolate Chunk Cookie Brownies

Soft and chewy oatmeal cookie and chocolate chunk brownies combined into a decadent brookie.

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  • Brownie
  • 10 tablespoons unsalted butter
  • 2 ounces milk or semi sweet chocolate, chopped
  • 1 cup granulated sugar
  • 1 1/2 teaspoons vanilla extract
  • 2 large eggs
  • 1/2 cup cocoa powder
  • 1/2 cup all-purpose flour
  • 1/4 teaspoon kosher salt
  • 1/3 cup semi sweet chocolate chips or chocolate chunks
  • 1/2 cup creamy peanut butter, melted
  • Oatmeal Cookie
  • 1 1/3 cup old fashioned oats
  • 1 cup all-purpose flour
  • 1/2 cup brown sugar
  • 1/2 teaspoon baking soda
  • 1/4 teaspoon salt
  • 1/2 cup oil
  • 1 egg
  • 2 teaspoons vanilla extract
  • 4 ounces dark chocolate, chopped into chunks
  • Handful of chocolate chunks


Preheat the oven to 350 degrees. Line a 9x13 inch baking dish with foil or parchment paper and grease.

Brownie Batter - Combine butter and 2 ounces chocolate to a microwave safe bowl. Microwave on 30 second intervals, stirring after each interval until melted and smooth. This takes me about 1 minute and 30 seconds.

In a medium bowl, combine melted chocolate mixture and sugar, whisking until completely combined. Add vanilla extract and eggs then whisk until smooth. Stir in the cocoa powder, flour and salt until smooth and just combined, try not to over mix the batter. It will be thick. Stir in remaining chocolate chips/chunks. Melt peanut butter in microwave safe bowl and add 1/4 cup of the melted peanut butter (you will use the remaining 1/4 cup later) and gently stir, leaving a few streaks of peanut butter; set aside.

Oatmeal Cookie - In a large mixing bowl or bowl of a stand mixer, add the oatmeal, flour, brown sugar, baking soda, salt, oil, egg and vanilla and beat until combined and the dough holds together (the dough will seem oily, this is good, if not add a tablespoon more of oil). Fold in about 1/2 cup of the chocolate chunks.

Assemble - Drop dollops of about half the brownie batter into the prepared pan (see images below). Sprinkle 3/4 of the oatmeal cookie dough around and over the brownie batter and in the corners. Dollop the remaining brownie batter over top the oatmeal cookie dough. Remelt peanut butter in microwave and swirl into brownie batter dollops, using a knife to swirl it. Drizzle any remaining over entire pan. Slightly press a handful of chocolate chunks into the top of batter.

Bake for about 25-35 minutes, just do not over bake. Cover with foil the last 10 minutes to ensure the top does not get crispy. Allow bars to cool in pan for at least 1 hour before slicing and serving.

Recipe Type: Dessert

19 Responses

  1. Kimberlee

    These look and sound delicious – can’t wait to bake them. Adding to my list of things to bake this month.

  2. Laura@Baking in Pyjamas

    Visiting from the Show-Licious Link Party. These looks amazing, I love anything with oats and chocolate in, delicious! I co-host Sweet and Savoury Sunday and would love for you to stop by and share this and other recipes with us. Have a great day!

  3. Wendy

    Your photos make me want to leap right in and take a bite! The combination of oatmeal cookie and brownie looks and sounds delicious! Pinning to make asap!

  4. Judy

    Wow, could these look any more delicious? I gained 10 pounds just looking at them. I’m definitely going to make these–maybe today!

  5. Nicole @ Three 31

    HOLY YUM! Wow, these look good enough to eat …. or lick the computer screen. Thanks for sharing this recipe, I’m definitely going to try these cookies/brownies/bars as soon as possible. As a lactating momma, I’ll add a handful of flax seed as well. With the exception of the “brownie” part, my favorite “milk maker” cookies combine chocolate chip cookies with milk-producing ingredients: whole oats and flax seed. The peanut butter in these bars takes them to a whole ‘nother level of yumminess. THANKS AGAIN FOR SHARING. ūüôā

    p.s. I’m sorry someone didn’t properly warn you about the heat and humidity in The South. If you were my neighbor, I’d offer you a glass of sweet tea while we sit a spell and (impatiently) wait for these brookies to bake. HA!

    • Jessica Knott

      I’d love to have you as my neighbor, it sounds like a lot of fun! And the flax seeds, I love the idea and will have to try it next. Thank you for your kind words!


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