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Diet Coke Brownies – A low fat brownie made with Diet Coke. For an added treat, I stirred in some butterscotch candy.
Brownies are by far my favorite dessert out there. They are just so darn good, and there are a million ways to mix them up and make them even better! Adding Girl Scout Cookies and making Thin Mint Brownies are just one the ways.
But let’s face it, eating brownies often is not good for you. So sometimes you need to find a way to make them just a little bit better for you.

What Are Diet Coke Brownies
This recipe has been around for years. Basically you cake a box brownie mix or even cake mix, and use a can of soda in place of any oil, eggs, or water called for in the recipe. It bakes up like a brownie, muffin or cake (depending on the mix you used), but there are obviously less calories and fat in them.
You can really use any can of soda. People often use a vanilla cake with a lemon lime soda or other fun combinations. Here I am using diet coke, which is calorie free, so it isn’t adding anything but the calories in the mix to the dessert.
How To Make Diet Coke Brownies
- In a bowl mix together the brownie mix and a can of diet coke until everything is incorporated. Do this carefully or the diet coke will foam up and make a mess.
- I had leftover Easter candy, so I added a few chocolate eggs to the mix. But you can skip that or mix in whatever else you like, just know that it will add calories and fat.
- Pour into your prepared 8 inch baking dish and bake.
- Let the brownies cool completely before slicing to serve.
Diet Coke Brownies have a very cake like consistency. They are extremely moist. So much so, that they are difficult to cut. I recommend refrigerating them to get them more solid, before slicing.
Without the added candy they are only 115 calories a serving, so they are much lower in calories than a traditional brownie.

More Decadent Brownie Recipes
- Peanut Butter Stuffed Brownies
- Easy Homemade Brownies
- Homemade Brownie Mix
- Strawberry Brownies
- Grasshopper Brownies
- Triple Chocolate Brownie Skillet
- Lemon Brownies

Diet Coke Brownies
Ingredients
- 1 box Betty Crocker Low Fat Brownie Mix
- 1 12 oz can Diet Coke
- 1/2 cup chopped chocolate candies, optional
Instructions
- Preheat oven to 350 degrees. Line an 8 inch baking pan with foil and spray with non-stick spray.
- Mix brownie mix and Diet Coke together in a large bowl. Fold in the chocolate candy.
- Pour into prepared baking pan. Bake for about 30 minutes, or until an inserted toothpick comes out clean.
- Allow to cool completely before serving.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
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yum! i’ve seen these coming across the food blogs, too, + have been wanting to try ’em. love the addition of butterscotch!
What an interesting recipe 🙂
Mmm I made diet coke brownies recently and they were really very good! Definitely a fun recipe to try! 🙂
What a great way to use a can of soda. 🙂 Looks very fudgy. 🙂
I have definitely seen these around, especially on Pinterest. I like rich, dense brownies so after your description I don’t think I would like them. Congrats on cutting out diet coke.
What a fudgy and delicious brownie flavour combo 😀
Love it!
Cheers
Choc Chip Uru
Who knew these DECADENT brownies would come from three ingredients…and be DIET!! yay!
I’ve never been much of a pop person, but I drink my fair share of coffee. Still, these sound really good to me!
Oh, so gooey and delicious!! I’m all for a lower cal brownie 🙂
I drink Diet Coke daily, love butterscotch, and absolutely love brownies! Thank you, thank you, thank you! I can’t wait to try these! Allen.