Reese’s Oreo Chocolate Beer Bars

Catalina Castravet
By Catalina Castravet
5 from 3 reviews

Brownies and Bars

Cook time Cook time: 40 minutes

Last updated on June 18th, 2021 at 04:47 pm

Reese’s Oreo Chocolate Beer Bars are stuffed with Reese’s Oreos and topped with a flavorful beer icing. One bowl, easy to make and ready in under one hour.

We love making Reese’s and Oreo desserts, and among our most popular once are Instant Pot Oreo CheesecakeOreo Devil’s Food Cake Truffles and Peanut Butter with Reese’s Cheesecake.

Reese’s Oreo Chocolate Beer Bars

Reese’s Oreo Chocolate Beer Bars is a must try if you love Oreo Cookies and Beer. Its just a perfect combination of bitterness and sweeteners in one delicious bar. These Reese’s Oreo Chocolate Beer Bars are totally addicting and such a fun treat.

The bars are easy to make and takes less than an hour to have them ready on your table. They are dense and fudgy, loaded with crushed Oreo cookies, which makes them the perfect chocolate lovers dessert! The beer just adds a beautiful texture to them, and the crumb is rich and dense.

Reese’s Oreo Chocolate Beer Bars tastes delicious and you get the full aroma of beer. For a denser beer flavor, I recommend using unfiltered beer or IPA beer.

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Tips on how to make the perfect Reese’s Oreo Chocolate Beer Bars:

  • Using high quality cocoa in this recipe is key, as the chocolate flavor is front and center.
  • Make sure the ingredients are at room temperature before you start baking. Also, the oven should be pre-heated.
  • Make sure the cake is fully cooled before frosting it.
  • If the frosting is too thin, add more powdered sugar 1/4 cup at a time.
  • The firmness of the buttercream frosting depends on the amount of sugar to liquid ratio. If you want a firmer frosting, add more confectioner’s sugar. If you want a softer frosting, add more beer to it. Just do it gradually.
  • Use strong flavored beer for a more pronounced beer taste.

Do Oreo’s have eggs?

There are no eggs in Oreo. However, Oreo have milk as cross contact and therefore they are not suitable for vegans. Oreo products do not contain nut or nut traces.

How to freeze the Reese’s Oreo Chocolate Beer Bars?

If freezing a frosted cake, first place cake in the fridge, so the frosting isn’t too soft. Fully wrap cake in plastic wrap tightly. Next, wrap in aluminum foil or place it in freezer bags. Freeze for up to 3 months. Defrost before slicing.


Reese's Oreo Chocolate Beer Bars

Reese's Oreo Chocolate Beer Bars

Reese's Oreo Chocolate Beer Bars are stuffed with Reese's Oreos and topped with a flavorful beer icing. One bowl, easy to make and ready in under one hour.
5 from 3 votes
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Prep Time: 10 minutes
Cook Time: 40 minutes
Total Time: 50 minutes
Servings: 9 bars
Calories: 400kcal
Author: Catalina Castravet


Oreo Reese's Chocolate Bars:

  • 1/2 cup unsalted butter (melted)
  • 1 1/2 cups granulated sugar
  • 1 large egg (room temperature)
  • 1 teaspoon vanilla extract
  • 3/4 cup beer of choice
  • 1/4 cup vegetable oil
  • 1 1/2 cups all-purpose flour
  • 1 cup cocoa powder
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon salt
  • 16 Oreo Reese's

Beer Icing:

  • 1 cup powdered sugar
  • 2-3 tablespoons beer of choice


  • Preheat oven to 325F.
  • Add the butter and sugar to the bowl of a stand mixer and beat until well combined, about 1 minute. Add the egg and vanilla, beat until combined. Stir in the beer, and oil, I used canola oil.
  • Using a spatula, stir in the flour, cocoa powder, baking soda, and salt until just combined.
  • Pour 1/3 of the batter into a brownie pan that’s been greased or sprayed with baking spray. Top with the Oreos and the rest of the batter. Using a spatula level the top layer.
  • Bake for 35-40 minutes or until a cake tester inserted into the center comes out with just a few crumbs.
  • Remove from oven and allow cooling completely before icing.
  • In a medium bowl mix powdered sugar and beer one tablespoons at a time, until well combined and no lumps are visible.
  • Cut the cake into bars, drizzle with icing and chill until set.


Calories: 400kcal | Carbohydrates: 74g | Protein: 5g | Fat: 11g | Saturated Fat: 6g | Cholesterol: 16mg | Sodium: 274mg | Potassium: 244mg | Fiber: 4g | Sugar: 50g | Vitamin A: 85IU | Calcium: 56mg | Iron: 4.2mg
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Celebrate Woman Today

The pictures look beautiful. I am not a fan of the ingredients, like Reese's, but the recipe is heavenly for the fans!


Jill Nunn

Get out of town! This looks and sounds AMAZING!!!



Excuse me while I wipe the drool from my face. These look so good! My hubby will thank me.


Lisa Joy Thompson

I love Oreos and Reese's, so I imagine I'd love Reese's Oreos. I would have never imagined adding beer to a brownie recipe though.



This is such an amazing treat! My family will surely love this!


Anne Marie

Mmm, two of my favorite things paired together - beer and chocolate. What a novel dessert idea!


Buffie Faes

What is an Oreo Reese’s? I found Peanut butter Oreos-is that correct??


I used regular Oreos and I used Reese's Cups


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