all recipes dinner special plates

reese brownies recipe

I’m not going to lie to you: these aren’t the most figure-friendly brownies on the planet.

They also are not baked entirely from scratch.

Or the neatest. Messy fingers are headed your way in 3, 2…

S'moreo Reese's Brownies | Get Sweet Smart

So! Now that I’ve sold you on them for sure (😉), here’s what they DO have to offer you and your taste buds:

1. S’moreo: the most beautiful hybrid of s’more + Oreo.

2. Specifically Double Stuf on the Oreo front.

3. Reese’s peanut butter cups in every bite. Any variety you so choose, although I used the classics.

4. Toasted marshmallows, because the word s’more cannot and should not be used if there aren’t real toasted marshmallows involved.

5. Boxed brownies, because they’re about the only thing in a box that doesn’t make me shudder, and they’re easy. Also, they’re foolproof, they’re cheaper than making homemade batter, and I just don’t enjoy making brownies from scratch for some reason.

S'moreo Reese's Brownies | Get Sweet Smart

I apologize for that controversial last statement. I wish I enjoyed making brownies from scratch. I just don’t. 🤷🏼‍♀️ I enjoy making just about everything else from scratch, but not brownies. Maybe it has a little something to do with a thing called impatience. The world may never know.

I can’t stand the thought of a boxed cake mix, which is arguably just about the same thing, but boxed brownies are so quick to provide my chocolate fix when I want instant gratification, whereas I always feel like homemade recipes take soooooo much longer (Dramatic much?) and don’t always turn out how I hoped texture-wise. The brownies from a box? They always turn out the same way, and I know exactly what I’m getting. Plus I’m pretty sure I’m still stuck on fond memories of preteen baking adventures when I could exercise my independence and make a pan of these without any parental supervision or interference.

I was not a child who enjoyed being told what to do. 😉

S'moreo Reese's Brownies | Get Sweet Smart

Suffice it to say: these brownies are easy. And loaded with all the best flavors, so there’s really no going wrong here unless you’re trying to diet!

You can, of course, mix up your own homemade brownie batter if you’re a better person than I am. I’d probably rather eat your version, as long as I don’t have to be the one making it! Homemade is unbeatable when it’s done right!

But these are so good as is, even I’d never notice whether the brownie base came from a box or an old family recipe.

S'moreo Reese's Brownies | Get Sweet Smart

Basically, all you need to do here is mix up your brownie batter, spread it into a 9×13 pan over some crushed grahams, press a whole lot of Oreos into the batter, and top it off with as many Reese’s cups as you can possibly squeeze into the pan. Bake the brownies as usual, and right before they’re done, sprinkle mini marshmallows over the whole thing until every trace of chocolate disappears, and broil the bars until the marshmallows turn golden.

S'moreo Reese's Brownies | Get Sweet Smart

It takes almost as little time as making a plain batch of brownies, but the end result is far better and much more chocolaty.

You can eat these right away in all their sticky, messy glory, or you can plop them in the fridge (or freezer) on an oven mitt for a few minutes to make it easier to cut clean slices.

These are the perfect summer snack that kids love and adults secretly enjoy, too. I hope they remind you of carefree summer days and bonfires without the smoke smell on your clothes the next day!

S'moreo Reese's Brownies | Get Sweet Smart


Prep Time: 15 minutes

Cook Time: 30 minutes

Yield: 20 brownies

Serving Size: 1 brownie


  • 12 graham crackers
  • 4 Tbsp. butter, melted
  • 1 Tbsp. sugar
  • 1 box brownie mix (for a 9×13 pan)
  • Oil and eggs as specified according to package directions
  • 16 Double Stuf Oreos
  • 16 Reese’s peanut butter cups
  • 2 cups miniature marshmallows


  1. Preheat oven to 350 degrees. Spray a 9×13-inch baking dish with nonstick cooking spray.
  2. Place graham crackers in a food processor and pulse until crumbly (or, alternatively, place in a heavy-duty Ziploc bag and crush with a rolling pin or something heavy). Add butter and sugar; mix well.
  3. Place graham cracker crumbs in prepared pan, pressing down to flatten.
  4. In a large bowl, prepare brownie mix according to package directions. Once batter is mixed, pour evenly over prepared graham cracker crust.
  5. Press Oreos into batter to cover entire pan. Place Reese’s peanut butter cups on top of Oreos.
  6. Bake brownies according to package directions, approximately 25-30 minutes.
  7. When brownies are done or slightly under-baked, sprinkle mini marshmallows on top to cover pan. Return to the oven for a few minutes or broil on high until marshmallows are golden brown.
  8. Remove from oven immediately. Serve warm or allow to cool completely for clean slices.

Nutrition Info:

Calories: 444
Total Fat: 24 g
Cholesterol: 46 mg
Sodium: 263 mg
Potassium: 189 mg
Total Carbs: 53 g
Protein: 5 g

About the author


Leave a Comment