Cookie Dough Brownies

5 from 6 votes

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These Cookie Dough Brownies are topped with all of your favorite things! Peanut butter, oatmeal chocolate chip cookie dough, and M&M’s! It’s fully loaded, just like my Monster Cookies.

two cookie dough brownies stacked on top of each other.

With Father’s Day right around the corner, I thought it only fitting that I make the most ridiculous dessert combining all of my husband’s favorite things. Brownies, oatmeal chocolate chip cookie dough, peanut butter, and peanut M&M’s.

I contemplated throwing some Reese’s peanut butter cups into the mix too, but forgot to pick them up at the store. I seriously thought about making another trip just for those, but didn’t want to change out of my fat pants. —>ironic.

Anyways, I LOVED these. Love love loved them. And so did my husband!


Main Ingredients Needed

I know this list seems long and intimidating but don’t worry, I take you layer by layer and break these Cookie Dough Brownies down for you. Here’s what you’ll need:

For the Brownies

  • Brownie Mix – I used the Pillsbury brand but feel free to use another brand. Or make homemade brownies!
  • Eggs + Butter – these are the mix-ins that make the brownie mix moist and fudgy.

For the Peanut Butter Layer

  • Peanut Butter – so good! Feel free to replace it with almond butter, cookie butter, or Nutella!
  • Powdered Sugar – to sweeten and thicken the mixture.
  • Milk – to thin out the mixture a little bit.
  • Vanilla – to add flavor.

For the Cookie Dough

  • Butter – for flavor and moisture.
  • Powdered Sugar – to thicken and sweeten the dough without adding too much graininess.
  • Sugar + Brown Sugar – to sweeten some more!
  • Vanilla – for flavor.
  • Milk – to thin the dough out a little without using raw eggs!
  • Flour – if you are worried about bacteria, bake the raw flour before mixing it in.
  • Salt – to balance the sweet.
  • Mini Chocolate Chips + M&M’s – some yummy chocolatey mix-ins!
  • Rolled Oats – these are optional but we loved the added texture!

For the Drizzle

  • White Chocolate – you could also use another type of chocolate here, but I kept it light with white chocolate.
  • Coconut Oil – this is to thin out the melted chocolate so it can be drizzled on.

For full details on how to make these Cookie Dough Brownies, see the recipe card down below 🙂


Start with a boxed brownie mix. I used Pillsbury 19.6 oz box…or something close to that. Stir in some melted butter and two eggs. Stir until smooth.

Spread into a greased and lined 9×9 baking dish and bake 25-25 minutes. Set aside to cool.

Peanut Butter

For the peanut butter layer, stir together some peanut butter with vanilla, powdered sugar and milk.

You should get a semi-sticky concoction. Spread this over your brownies.

Cookie Dough

For the oatmeal chocolate chip cookie dough, mix together some butter, sugar, powdered sugar, brown sugar, vanilla, milk, flour and salt all together.

Add in your chocolate and oats and top your brownies with it. And because it’s Father’s Day, add on some chopped M&M’s in boy-ish colors.

White Chocolate Drizzle

Drizzle with a little melted white chocolate mixture {in the recipe} and voila! Your bars are finished!

Cut and serve.

Oatmeal Chocolate Chip Cookie Dough Peanut Butter Brownies

More Brownie Recipes to Try!

More Cookie Dough Recipes to Try!

Enjoy friends! 🙂 Have a good day!

The printable recipe card is down below!

Oatmeal Chocolate Chip Cookie Dough Peanut Butter Brownies
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5 from 6 votes

Cookie Dough Brownies

These Cookie Dough Brownies are topped with all of your favorite things! Peanut butter, oatmeal chocolate chip cookie dough, and M&M's! What could be better?
servings 12 servings
Prep Time 20 minutes
Cook Time 25 minutes
Total Time 45 minutes


  • 1 box brownie mix I used pillsbury
  • 2 eggs
  • 1/3 cup melted butter

peanut butter layer:

cookie dough layer:

for the drizzle-


  • Preheat oven to 350 degrees. Line 9×9 glass dish with foil and spray with non stick cooking spray. Set aside.
  • In large bowl, stir brownie mix, eggs and melted butter together until combined. Pour into prepared dish and smooth the top. Bake 25-35 minutes or until set and toothpick comes out clean after being inserted. {A few moist crumbs are fine.} Set aside to cool
  • For the peanut butter layer, mix all ingredients together in a small bowl until combined. Spread over the top of the brownies and press down lightly so it sticks.
  • For the cookie dough layer, cream butter and sugars together until light and fluffy. Stir in vanilla and milk. Stir in dry ingredients, then chocolate chips and oats. Spread cookie dough by the teaspoonful over the peanut butter layer and press down to flatten the top. Sprinkle with chopped M&M’s.
  • In a small bowl, microwave white chocolate and coconut oil until smooth and completely melted. Drizzle overtop of the bars. Refrigerate 5-10 minutes or until the white chocolate hardens. Cut into 12 pieces and serve.


Calories: 556kcal | Carbohydrates: 72g | Protein: 8g | Fat: 27g | Saturated Fat: 13g | Cholesterol: 52mg | Sodium: 270mg | Potassium: 103mg | Fiber: 1g | Sugar: 53g | Vitamin A: 319IU | Vitamin C: 1mg | Calcium: 45mg | Iron: 2mg
Course: Dessert
Cuisine: American
Keyword: Cookie Dough Brownies

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Recipe Rating

37 Responses
  1. Sue

    This seriously looks delish and i want to try it but I noticed u actuallynuse flour for the cookie dough layer, but there is no need to bake??

  2. Ingenuity be damned « The Sugar Maple Inn

    […] Lauren’s Oatmeal Chocolate Chip Cookie Dough Peanut Butter Brownies – But trust me on this, double the cookie dough layer. So amazing. This was for a […]

  3. Steffanie

    5 stars
    These were SO GOOD. So sweet. I could only handle about one piece and I left the drizzle off. I had to add a bit more milk to the peanut butter mixture to make it spread-able but I wonder if that’s just cause I’m at a 6000 foot elevation? Anyway. Thanks so much for sharing these, so good. Looking forward to tex mex chicken pasta on the menu tonight.

  4. Brenda (Kookt)

    Wow Lauren, this recipe must be delicious!
    I looove peanut butter, I can’t say no to chocolate, can eat chocolate chip cookies all day and M&m’s are always good!

    Saving this recipe and have to make it ASAP!!

  5. Julie @ Table for Two

    woah, this has a ton going on which only means one thing: partayyy in my mouth!! all sounds so good!!

  6. Erin @ Dinners, Dishes, and Desserts

    Holy Wow!!! I want to eat this, who cares what Dad wants!! Although I think he might actually like them too 🙂

  7. sally @ sally's baking addiction

    I think I’ve DIED and gone to heaven! My dad would love these too! Lauren, you have the best recipes! I can’t wait to make these. PB + chocolate is my #1 loooove. 🙂

  8. DessertForTwo

    Oh my!

    Do I have to be a dad to bake these & eat the whole pan?? Oh, nevermind, I’ll just use girl-colored M&Ms! 😉

  9. Chung-Ah | Damn Delicious

    Awww, what a sweet post. And these brownies, my god! Dude man, I’m trying to cute back on sweets but that doesn’t look like it’s going to happen any time soon.

  10. kelley {mountain mama cooks}

    Wow, these look dangerously good. I wouldn’t trust myself with these in the house! It’s like all my favorite treats in one!!!

  11. Tara @ Chip Chip Hooray

    Oh my GOSH. I would gladly accept these as a gift for any holiday ever. Or just for being me. Actually, any of those LAYERS would be totally acceptable.

    Your hubs is one lucky dad!

  12. Kathryn

    I’m spending tonight cooking up a storm for my dad, brownies always go down so well don’t they although I don’t think mine will be anyway as ace as these are…