Out Of The Box Brownies: Magical brownie recipes that start with a box

Mountain Dew Cupcakes

June 25, 2013 By: Denise Leo, Global Brownie Ambassador Category: Blonde Brownie, Creative, Decadent, Fruit, Fun For Kids, Nut-Free, Off the Beaten Path, Party, Products

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This is the FIRST CUPCAKE for my site, and I did NOT make this decision lightly… in truth, once I had the idea for this citrus-y, lemon-y, lime-y dessert, I knew that the Mountain Dew Cupcake simply HAD to be created. Just look at it. It’s like the headline should be “Cupcake Escapes from Kitchen and Rules the X-Games.”


BAM! Yeah, THAT just happened, right in your mouth.


  • 1 box lemon cake mix (I used Duncan Hines Lemon Supreme)
  • 3 eggs
  • One 6-ounce cup lime yogurt (I used Yoplait Key Lime Pie flavor)
  • 1/3 cup oil
  • 3/4 cup water


  • Two 12-ounce cans Mountain Dew (about 3 cups)
  • Juice of 1 lime (about 3-4 Tbsp)
  • 2 Tbsp cornstarch
  • 3/4 cup of the citrus batter, above
  • 14 drops green food color
  • 3 drops yellow food color


  • One tub lemon frosting (I used Duncan Hines Creamy Lemon)
  • 3 drops green food color
  • 2 drops yellow food color
  • 3/4 cup sifted powdered sugar



Put on your shin guards and crash helmet. Keeping one hand on the handlebar of your BMX, use the other hand to simultaneously pour both cans of Mountain Dew into a medium saucepan. You will start with about 3 cups of liquid in the pan.


We’re going to reduce that Mountain Dew down to its intense, dewy essence. There are no rules on how to reduce Mountain Dew, so I made ‘em up: Pow! Boil that bad boy on high heat for about 15-20 minutes until about 3/4 cup of liquid remains.

During the 15 minutes when that’s boiling down, squeeze about 3-4 tablespoons of lime juice into a small bowl and mix in 2 tablespoons of cornstarch. Set that aside for later.


Check your boiling pan. When you have about 3/4 cup of molten Mountain Dew left, it’s time to move forward.


It may be hard to judge how much is in the pan, so you can use a heat-safe Pyrex glass measuring cup to check. That’s what I did.

Keeping the pan off of the heat, return The Dew to the saucepan, except for about 1/8 of a cup, which you will mix right into the cornstarch mixture. The goal is to get the cornstarch mixture warmed up a little.


Add cornstarch mixture to the pan, whisking it quickly, like you’re pedalling up an extreme hill on the BMX course. Don’t worry if you get flecks of lime goo on your face and apron — pretend it’s the mud you’re flinging onto the competitors behind you.



Return the mixture to medium or medium-high heat for just another minute or so, until it thickens up to the consistency of pudding. It will look a lot like lemon meringue pie filling at this point. This, my MD friends, is the basis for your Mountain Dew Goo. Pour it into a medium-sized bowl and set it aside while you make the cake batter.

Put all 5 of the batter ingredients into a large bowl and mix with an electric mixer for 2 minutes on medium speed.

It should be thick, smooth, and creamy. Don’t eat it.

Take about 3/4 cup of the lemon batter and add it to the bowl of the Dew Goo.

Mix together and then add 14 drops of green food coloring.

Getting close. Now add 3 drops of yellow food coloring. Mix until the color is even. You can tweak it to be greener or yellower based on your personal preference. (I found this particular shade to be a nice balance against the yellow of the batter. Just one DewGirl’s opinion.)

Set the green goo aside while you fill all your muffin cups about 1/4 full with the yellow batter. I used foil muffin cups in silver and green, left over from Christmas; they were just so Dew-like.

On top of that layer, add an edge-to-edge layer of the green Mountain Dew Goo. This layer should bring each muffin cup up to about half full.Be sure to spread the green from edge to edge so you can’t see any of the yellow batter.

Top off each cupcake with a final layer of the yellow batter, making sure to cover the green entirely. I found the easiest way to do this was to spoon a circle of batter around the outer edge of the cup and then cover over the middle. Each cup should be pretty full, about 3/4 to 5/6 full.

Bake at 350 F for 17-21 minutes, until a toothpick test reveals a nicely raised (but still slightly moist) and spongy-set cake. During baking, something wild happens to that green layer, which gets all loopy, swirly and tossed around as the batter rises and expands. You’ll see what I mean when you take your first bite.

Set aside to cool completely. In the meantime, mix your frosting. Put the pre-made lemon frosting into a medium bowl. Mix in 3 drops of green and 2 drops of yellow food coloring. Feel free to tweak until you get the Mountain-Dew color that YOU like.

Add 3/4 cup of powdered (or confectioners) sugar. Mix until it’s completely lump-free.

Sprinkles make everything better. My opinion: These Mountain Dew Cupcakes just do NOT look extreme without some garish garnish on top. POW! Now THAT’S better!

You don’t HAVE TO refrigerate these, but they are so much more refreshing when you do. Chill off on a summer day with one of these bad boys. YEAH!

Keep your eyes on the prize: the one, the only, Mountain Dew Cupcake!! 

9 Comments to “Mountain Dew Cupcakes”

  1. This is awesome! I am definitely going to make these for my husband’s birthday….he’s an even bigger Mt. Dew fanatic than I am! I can’t wait!

    • Denise Leo, Global Brownie Ambassador says:

      Erica – I’ve made 3 batches of these, and they’ve all disappeared quickly. Just what is it about Mountain Dew? IT’S JUST SO… YUM! Keep them in the frig’ — it makes them even THAT MUCH MORE delicious! Let me know how it goes! -Denise

      • Well, today is my husband’s birthday….I’ve been waiting anxiously to make these for him!! I’m making them now….waiting for the Mt. Dew to reduce.
        I don’t see anywhere on the recipe how many this makes. I would assume around 24 since a cake mix typically makes about that many. I just wanted to know so I can make sure all of them get the Mt. Dew Goo in the middle…I would hate to run out of the magic part before I got to all of them.
        Also, I wondered why there is powdered sugar added to the frosting. Does it just make it go further? I haven’t made that part yet. Just curious.
        I can’t wait to taste these!!

        • Denise Leo, Global Brownie Ambassador says:

          So glad you chose to make these for your husband’s birthday. They’re ridiculous, aren’t they? Sorry I didn’t see your comment until it was too late to answer your Qs. I can see that you’ve solved them all yourself. And you’re right — the powdered sugar helps the frosting be a nice consistency, even after adding a bunch of drops of food coloring. (PS – I love how the Dew Goo inspired you to call it “the magic part.” heehee)

  2. Update….those cupcakes are AWESOME!
    It does make 24 cupcakes…I was so worried about running out of the Mt. Dew Goo before I got to the end that I didn’t pay enough attention to the cake batter part of it….I ran out of it 3 cupcakes from the end and had to spoon some out of all the other ones so I could finish.
    I did make one slight change. I had a little bit of lime juice left after mixing 4 Tbsp. into the cornstarch. It was a little more than a teaspoon. I mixed it into the lemon frosting. I tasted the frosting before and after adding the lime juice…I definitely liked it better with the lime.
    Oh, and I realize now that the powdered sugar thickens up the frosting….I didn’t know the lemon frosting would be so much runnier than chocolate frosting out of a tub is.
    Have you ever tried making this in a 9×13 cake pan instead of cupcakes? I wonder how it would turn out. I might try that next time. And yes, I will most definitely be making this recipe again!!! Thank you!

    • Denise Leo, Global Brownie Ambassador says:

      Your comment made my day. Thanks for the update! I think these cupcakes are pretty special just in terms of presentation. When I took these to work, all of my Dew-Addicted coworkers went absolutely bonkers.

  3. I made these cupcakes but I used surge instead of mt.dew and I also used lemon pudding in the cake mix instead of lime yogurt and I used a lemon buttercream recipe and thined it with about a teaspoon of lime juice and 3 tablespoons of surge and omg it is so amazing also I saved some of the jelly before I added the cake mix to it and thined it a little with the surge soda and drizzled it on top of the cupcakes … wow amazing thanks for this recipe I will be using it again

    • Denise Leo, Global Brownie Ambassador says:

      Surge? Great idea! I’m so happy they turned out so well. Your baking ambassador status is pending; what would you like your sash to say? Haha

  4. Denise Leo, Global Brownie Ambassador says:

    Elizabeth, since you (clearly) have a thing for lemon, you might want to try this recipe. It’s another favorite of mine, and it’s super simple to make. Let me know if you try it!


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