50 minutes

Mud Pie Brownies

These Mud Pie Brownies are super easy to make thanks to a little cheat, but pack in the rich chocolate flavor with toasted marshmallow fluff!

These Mud Pie Brownies are super easy to make thanks to a little cheat, but pack in the rich chocolate flavor with toasted marshmallow fluff!


 

I’m in Chicago for the weekend at a conference where I’m supposed to learn all kinds of good stuff, but really I’m here for the food and friends. It’s been a long few weeks and I’ve definitely been in serious need of a few girls nights loaded with laughs! Speaking of laughs, are you guys excited about the new Peanuts movie hitting theaters today?

These brownies are a little bit of a cheat, sometimes you just gotta simplify things, am I right? I used a store-bought brownie mix then topped it with chocolate syrup, marshmallow fluff, and chocolate chips; then I broiled it for a couple of minutes to get it all toasty and melty!

These Mud Pie Brownies are super easy to make thanks to a little cheat, but pack in the rich chocolate flavor with toasted marshmallow fluff!

Mississippi Mud Pie Brownie Ingredients

The foundation of these decadent brownies is my Recipe For Chocolate Fudge Brownies, which is made with pantry staples such as granulated sugar, canola oil, vanilla extract, all-purpose flour, Dutch-process cocoa powder, salt, and of course, a chopped-up dark or milk chocolate bar.

Completing the brownie batter is unsalted butter and large eggs. When it comes to butter, I reach for a European-style butter such as Kerrygold or Finlandia. Since European-style butter has a higher fat content, it produces a richer flavor in these brownies, making them absolutely mouthwatering!

To give these brownies their signature mud pie flavor, they’re covered in mini marshmallows and a 5-ingredient homemade chocolate icing. To make the icing, you’ll need salted butter, powdered sugar, unsweetened cocoa powder, whole milk, and vanilla extract.

These Mud Pie Brownies are super easy to make thanks to a little cheat, but pack in the rich chocolate flavor with toasted marshmallow fluff!

How To Make Mississippi Mud Pie Brownies

  1. Preheat the oven and line a cake pan with parchment paper and then lightly spray it with nonstick cooking spray.
  2. Melt unsalted butter over low heat and then stir in granulated sugar until the mixture becomes smooth. Remove the pot from the stove and allow it to cool, stirring often to release heat.
  3. Beat canola oil and vanilla extract into the butter and sugar mixture until fully combined with no separation between the ingredients.
  4. Add the large eggs in one at a time, beating each one with a spatula or fork after each addition.
  5. Sift all-purpose flour, Dutch-process cocoa powder, and salt into the butter and sugar mixture. Mixing until the dry streaks are gone.
  6. Fold a portion of the dark or milk chocolate into the brownie batter.
  7. Pour the brownie batter into the prepared baking pan and then sprinkle the remaining chocolate chunks on top.
  8. Bake the brownies in the preheated oven until done. Then remove them from the oven and evenly sprinkle mini marshmallows over the top of the brownies. Afterward, transfer the marshmallow covered brownies back into the oven to bake.
  9. Remove the brownies from the oven and then allow them to cool while preparing the icing.
  10. Prepare the icing by melting salted butter over medium heat.
  11. Sift powdered sugar and unsweetened cocoa powder into the melted butter. Whisk until combined and then pour in the whole milk and vanilla extract.
  12. Remove the icing from the heat and immediately pour it over the top of the mini marshmallows. Spreading it as evenly as possible before the icing sets.
  13. Allow the iced brownies to set completely before removing the batch from the pan to slice into squares.

Rebecca’s Tips

  • Be sure to prepare the pan well so the brownies can be easily removed with as minimal a mess as possible. Layering the pan with parchment paper may require two sheets, one going in each direction, allowing some to hang over the edges so you can grip it to remove them once they’re cooled.
  • It’s important not to overcook the butter and sugar mixture on the stove. Therefore, be sure to remove the mixture from the stovetop once the butter and sugar have started emulsifying, with no butter separated from the sugar.
  • If you prefer, you can use chocolate chips in place of chocolate chunks from the chopped chocolate bars.
  • For a rocky road version, you can mix almonds, walnuts, or pecans into the brownie batter.
  • The easiest and cleanest way to slice these brownies into squares is to use a plastic knife. I found that the marshmallows stuck to a metal chef’s knife unless it was sprayed with nonstick spray and wiped clean between each slice.

Storage Instructions For Mississippi Mud Pie Brownies

If you aren’t planning to eat these brownies the same day, I’d recommend leaving them in the pan and covering it tightly with plastic wrap or aluminum foil. Not slicing into the Mud Pie Brownies until you’re ready to serve them will preserve their freshness and protect their texture.

Once sliced, transfer the squares into an airtight container. If you need to layer the brownies in the storage container, then I’d recommend separating the layers with parchment paper to prevent them from sticking together.

Store the Mud Pie Brownies in an airtight container at room temperature to enjoy for up to 3 days.

How To Serve Mississippi Mud Pie Brownies

These Mud Pie Brownies are a delicious dessert as is, but for an extra gooey treat, you can pop slices in the microwave before enjoying them! Want to take things a step further?

Top your warm mud pie brownie with a scoop of vanilla ice cream or a dollop of whipped cream!

mud-pie-brownies-recipe-6

More Brownie Recipes

If you’ve tried this recipe, please let leave a review in the comments below. I love hearing from you! Don’t forget to tag me – @sugarandsoulco – on Instagram and Pinterest with your photos, or join our Sugar & Soul Show-offs Community and share them there.

These Mud Pie Brownies are super easy to make thanks to a little cheat, but pack in the rich chocolate flavor with toasted marshmallow fluff!
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Mississippi Mud Pie Brownies


Course Dessert
Cuisine American
Prep Time 10 minutes
Cook Time 40 minutes
Cooling Time 5 minutes
Total Time 50 minutes
Servings 24 brownies
Indulge in the ultimate recipe for homemade Chocolate Chunk Brownies, topped with gooey marshmallows and finished with a rich chocolate frosting.

Ingredients
  

Brownies

  • 1 cup unsalted butter 227g, I use Kerrygold
  • cups granulated sugar 500g, I use Domino
  • 2 tablespoons canola oil
  • 1 tablespoon vanilla extract
  • 5 large eggs I use Vital Farms
  • 1 cup all-purpose flour 130g, I use King Arthur
  • ¾ cup + 1 tablespoon Dutch-process cocoa powder 80g, I use Ghirardelli
  • ¾ teaspoon salt
  • 8 ounces dark or milk chocolate I like using half a Trader Joe's Pound of Chocolate bar

Topping

Instructions

  • Preheat oven to 350°F and line a metal 9×13-inch cake pan with parchment paper and spray lightly with cooking spray. Make sure some of the parchment is over the edge of the pan for easy removal. This may require two sheets, one going in each direction – make sure the one that goes across the shorter distance is under the one that goes along the full length of the pan.
  • Melt 1 cup unsalted butter in a heavy-bottomed saucepan over low heat. Add 2½ cups granulated sugar and stir until smooth, the butter and sugar have started emulsifying, and no butter is separated from the sugar. Remove from heat and let the mixture cool for 5 minutes, stirring often to release heat.
    Sugar is added to melted butter in a saucepan.
  • Add 2 tablespoons canola oil and 1 tablespoon vanilla extract to the butter and sugar and beat them in with a rubber spatula until fully combined and there's no separation between the ingredients (no oil resting on top).
    Vanilla being stirred into butter and sugar in a saucepan.
  • Beat in 5 large eggs one at a time, beating with the spatula or a fork after each one. Mix until fully incorporated.
    An egg in a pot with melted butter and sugar.
  • Sift 1 cup all-purpose flour, ¾ cup + 1 tablespoon Dutch-process cocoa powder, and ¾ teaspoon salt into the butter and sugar mixture, stirring gently with a rubber spatula just until the dry streaks are gone.
    A sifter sifting flour and cocoa into butter and sugar in a pot to make brownie batter.
  • Fold most of the 8 ounces dark or milk chocolate into the batter.
    Chopped chocolate resting on top of brownie batter in a pot.
  • Pour the brownie batter into the prepared baking pan, sprinkle the remaining chunks on top, and bake for 25 minutes.
    Chocolate chunk brownie batter in a 9x13-inch pan ot a table.
  • Pull the brownies out of the oven and evenly sprinkle 6 cups mini marshmallows over the top of the brownies, and put them back in the oven to bake for an additional 3 minutes.
  • Remove the brownies from the oven and allow to cool for a few minutes while the icing is prepared.
  • Prepare the icing by melting 6 tablespoons salted butter in a saucepan over medium heat.
  • Sift in 2½ cups powdered sugar and 2 tablespoons unsweetened cocoa powder and whisk until combined, then whisk in ¼ cup whole milk and 2 teaspoons vanilla extract.
  • Remove from heat and immediately pour over the top of the mini marshmallows, using a rubber spatula to help cover as evenly as possible. The icing will begin to set quickly.
  • Let the icing set completely before removing the brownies from the pan and slicing into squares for best results. Use a plastic knife for the cleanest cuts. The marshmallows will stick to a metal chef's knife unless it's been sprayed with nonstick spray and wiped down.

Notes

  • Thicker chocolate bars are preferred for this recipe, so you have big chunks about the size of a penny. However, thinner baking chocolate, like Ghirardelli, can be used, as well as prepackaged chocolate chunks (although these usually tend to have additional ingredients added, which can impact the flavor).
  • Chocolate chips may also be used.
  • It’s important to add the marshmallows and bake for a couple of additional minutes to help the marshmallows expand slightly and stick to the brownies.

Nutrition

Calories: 373kcal | Carbohydrates: 54g | Protein: 3g | Fat: 18g | Saturated Fat: 10g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 5g | Trans Fat: 0.4g | Cholesterol: 64mg | Sodium: 124mg | Potassium: 142mg | Fiber: 2g | Sugar: 43g | Vitamin A: 396IU | Vitamin C: 0.01mg | Calcium: 24mg | Iron: 2mg

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5 Comments

  1. 5 stars
    Made this for dessert tonight and it was fantastic!! Thanks for sharing your recipe!!!

    1. Right! I LOVE boxed brownies and adore dressing them up a bit!

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