These delicious Light Lemon Cupcakes are the perfect afternoon snack that won’t ruin dinner.

Light Lemon Cupcakes | Low Fat Cupcake | Weight Watchers Desserts

Sometimes you just want a little treat to hold you over until dinner and these light lemon cupcake are perfect!

We are forever counting calories and watching what we eat in our house so I’m always on the hunt for lighter treats and desserts that satisfy our sweet tooth. I’d be lying if I said that we haven’t been known to polish off a bag of chocolates or a package (or 2 or 3) of cookies all in the name of having a “little something.”

But this is a new year and we are really trying as a family to make smarter choices when it comes to food. And for me that means not giving into every baking whim that I have. Well, unless I can come up with a way to lighten up a recipe that is.

These lightened up lemon cupcakes fit the criteria and were a big hit in my house.

Lightened Up Lemon Cupcakes

A long time ago I heard about a way to take boxed cake mix and make it lighter. I’ve used this method many times over the years and anyone who has ever had my lightened up desserts never noticed. That’s what I call success.

Believe it or not there is one secret ingredient that does the trick: diet soda. Yup. You can use any boxed cake mix and instead of adding the eggs, water, oil, etc., you just substitute 12 oz of diet soda and bake as usual.

Diet Soda Cake

For these lightened up lemon cupcakes I used a sugar free boxed yellow cake mix and paired it with Diet 7UP. It was the perfect combination.

You can use this method with any boxed cake mix and any soda, but for yellow cake mix, I found Diet 7UP to be the best choice. It already has the lemon-lime flavor so I added the tiniest bit of lemon extract to a tub of whipped topping and piped it right on top finishing it off with some gold sugar glitter. So delicious!

Light Lemon Cupcakes | Diet Soda Cake

Lightened Up Lemon Cupcakes Recipe

-1 Box of Sugar Free Yellow Cake Mix

-12 oz of Diet 7UP

-Light or Fat Free Whipped Topping

-Lemon Extract


-Preheat oven to 350 degrees

-Stir together dry contents of boxed yellow cake mix and 12 oz of Diet 7UP. Stir with a spoon until well combined. If you find it to be too thick, add a bit more soda or water. I had the perfect consistency with 12 oz.

-Spoon batter into cupcake pan. (Be sure to use liners.)

-Bake in oven for 10 minutes and then check with toothpick to see if it’s baked all the way through. If not, add additional baking time as needed.

While the cupcakes are baking add a few drops of lemon extract to a tub of light or fat free whipped topping and stir. Taste and add more if desired.

Once the cupcakes are done and cooled, transfer whipped topping into a pastry bag (no tip necessary) and pipe onto each cupcake. Finish off with some gold sugar glitter. Not only will you have a nice, light treat but it’s pretty too. 

Light Lemon Cupcakes with only 3 ingredients | Diet 7UP Cupcakes | Spring Desserts

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