The ultimate in ooey gooey, fudgy, indulgent, “oh-my-gosh this is amazing” type of brownie. These Marshmallow Swirled Oreo Brownies are just too good for words. A fudgy, melt in your mouth brownie loaded with Oreo cookies and swirls of marshmallow topping. Easily one of the most sinful and amazing things I’ve come up with, put these brownies on the top of your dessert bucket list.
making brownies from scratch
When it comes to brownies, there’s two types: cakey and fudgy. I am team fudgy brownies all day. This recipe calls for the brownies to be made completely from scratch. These marshmallow swirled oreo brownies are thick and fudgy. Here a few tips that will help making the brownie part of this recipe a success:
- Melt the chocolate and butter thoroughly. Place the butter and chopped chocolate (you can use chocolate chips too) in a microwave safe bowl and heat for 30 second increments. Remove the bowl after 30 seconds and stir the ingredients together. Return the bowl to the microwave and repeat this process one to two more times until the chocolate and butter and completely melted and smooth. As you mix the chocolate and butter the residual heat from the bowl will help melt the ingredients, so you shouldn’t have to do this more than 3 times. Be careful not to overheat the chocolate or it can burn or seize up which will ruin the chocolate. The chocolate should be completely smooth and glossy.
- Let the chocolate cool slightly. Once the chocolate is completely melted stick it in the refrigerator to cool for a few minutes. If the chocolate is too warm when you add the eggs it may scramble them. No one wants scrambled eggs in their brownies!
- Don’t over mix the batter. It’s important to make sure the ingredients are thoroughly combined but you want to avoid over mixing the batter. Once the sugar, eggs and vanilla extract have been mixed into the chocolate you’ll add in the dry ingredients. This is where you want to be more mindful of folding in the dry ingredients, mixing just until a thick batter forms. This batter comes together fairly quickly so there’s no need to over do it.
the layers of marshmallow swirled oreo brownies
These brownies have 3 parts to them; the actual brownie itself, the marshmallow topping and oreo cookies. Pretty easy and yet so magical, right?! I like to use this marshmallow topping. It’s cheap, makes perfect gooey marshmallow swirls and has the most delicious flavor. Then there’s the Oreo’s. I love to use double stuffed but you can use whatever variation you’d like. I know there’s a chocolate covered marshmallow variation that would probably be spectacular with this recipe.
Here’s how to layer this recipe:
- first layer (bottom layer) : Pour about half of the brownie batter into the baking pan and smooth it out so it creates an even, single layer of brownie.
- second layer: make a single layer of oreo cookies onto of the brownie batter, slightly pushing them into the batter.
- third layer: Use a spoon to drizzle some of the marshmallow topping over the oreo’s and brownie batter. This is where it gets a little messy but that’s okay. The marshmallow topping will run over the cookies and into the batter which is what you want.
- fourth layer: Pour the remaining brownie batter into the pan. Use the back of a spoon or an offset spatula to smooth the batter into a even layer. Some of the marshmallow topping from the previous layer may mix with the brownie batter, this is totally fine. Just make sure that the rest of the brownie batter makes an even layer.
- fifth layer: Pour more of the marshmallow topping onto the layer of brownie batter in vertical or horizontal lines. Use a kitchen knife or toothpick to swirl the marshmallow and batter together.
- last layer (top layer): Add another layer of oreo cookies on top of the brownie/marshmallow layer and slightly press them into the batter. You can break cookies in half to fill in the corners or crush a few cookies and sprinkle the crumbs over the top layer if you’d like as well.
Marshmallow Swirl Oreo brownies
- 1/2 cup 1 stick Unsalted Butter
- 8 ounces Semi Sweet Baker's Chocolate coarsely chopped
- 1 cup Sugar
- 3 Large Eggs room temperature
- 2 teaspoons Pure Vanilla Extract
- 1 cup All Purpose Flour
- 1/4 cup Unsweetened Cocoa Powder sifted/whisked
- 1/2 teaspoon Salt
- 20 to 25 Oreo Cookies
- 1 ) 12 ounce jar Marshmallow Topping
- Preheat oven to 325 degrees. Line an 8x8 inch or 9x9 inch baking dish with parchment paper, leaving about a 1 to 2 inch over hang to make for easy transfer. Set baking dish aside.
- In a small bowl combine flour, cocoa powder, and salt. Sift dry ingredients together or use a whisk to mix and break up any clumps in the flour and cocoa powder. Dry ingredients should be thoroughly mixed together and free of clumps.
- In a large, heat safe bowl, melt chocolate and butter together by a double broiler or heating in the microwave, stirring in between each heat session. Chocolate and butter should be completely melted and smooth.
- Add in sugar and mix thoroughly. Batter will be slightly gritty. Add in eggs, one at a time thoroughly mixing before adding in the next one. Add in vanilla extract and mix.
- Slowly add in dry ingredients, folding them into the batter. You don't want to mix vigorously because this may cause your brownies to be tough when they bake, just fold the batter until all the dry ingredients are incorporated. Brownie batter will be thick.
- Pour about half the brownie batter into the bottom of your baking dish. Evenly smooth it out so it cover the bottom of the dish and creates a thin layer. Next, place oreo cookies over the brownie batter, placing them side by side to cover the brownie layer. You can also break the cookies in half to fill in gaps or spaces. Spoon some marshmallow topping over the cracks/gaps between the oreos and the batter. Drizzle topping over the oreos as well. Reserve some topping for the top layer.
- Pour the rest of the brownie batter over the Oreo cookie and marshmallow layer. It may seem like there's not enough batter to cover it but just smooth it out until it covers everything. Some oreos or marshmallow topping may peek through, this is fine. Spoon marshmallow topping in thick vertical or horiztonal lines over the brownie batter. Using a butter knife or toothpick, swirl the marshmallow around in different directions to create a marbled look. Add a few more oreos to the top layer, some whole, some broken.
- Bake in the oven for about 40 minutes. Brownies are down when a tester inserted into the center comes out clean. Since there are cookies in the center of these brownies you may have some cookie on your tester.
- Allow brownies to cool completely before serving, about 30 minutes or so. When ready to serve lift up sides of the parchment paper and lay brownies on a clean, flat surface. Using a sharp kitchen knife cut brownies into squares and serve. Any leftovers should be stored in an airtight container.