This Easy Keto Funnel Cake will bring back memories of country fairs and childhood. This tasty low-carb dessert is just a few minutes and some hot oil away!

Yes, you read that right... KETO FUNNEL CAKES!!! Who here grew up going to county fairs??? Funnel cakes scream fair to us. Doused in powdered sugar these crispy strings of fried dough were absolute perfection.
We've ketofied the classic to be low-carb and easy to make. All in all, this took us about 10 minutes to whip up so if you have a well-stocked keto pantry we bet you already have these ingredients on hand!
These gluten-free and sugar-free funnel cakes have zero almond flour making them nut-free. They're perfect for a ketogenic diet! They're crispy on the outside and fluffy in the middle.
Ingredients in Keto Funnel Cakes:
- eggs
- butter
- baking powder
- whey protein isolate
- coconut flour
- vanilla extract
- xanthan gum
- salt
- coconut oil
- powdered erythritol
Here's the step by step explanation of how to make this keto funnel cake recipe:
You'll start by mixing all of the dry ingredients in a bowl, add in the wet and mix until smooth.
Heat the oil in a dutch oven until it reaches 350°, a candy thermometer comes in handy here. Otherwise, you'll know when the oil is ready when it shimmers across the top. To test it further, drop a small bit of batter into the oil - it should fry immediately.
Pour the batter into a piping bag or a plastic bag (Ziploc!) and cut off the tip so that it's about a ½" diameter.
Slowly drizzle the batter into the hot oil in a circular motion, fry 1-2 minutes per side until golden brown. Transfer to a paper towel-lined plate to drain the excess oil.
Shake some powdered "sugar" on top and dig in!
Feel free to serve it up with a homemade caramel or chocolate sauce as well, now that would be delicious!
What is the nutritional information for this recipe?
As always, you can find the full nutritional breakdown including the carb count (total carbs and net carbs) at the bottom of the recipe card. You can find the serving size/yield at the top of the recipe card. You should always double-check your specific ingredients as different brand's ingredients may have different values.
📖 Recipe

Keto Funnel Cake
Ingredients
- 2 large eggs
- ¼ cup unsalted butter melted
- ½ teaspoon baking powder
- 1 scoop 23.3g whey protein isolate
- 1 tablespoon coconut flour
- ½ teaspoon vanilla extract
- ½ teaspoon xanthan gum
- Pinch of salt
- 2 cups coconut oil for frying
- Powdered erythritol for serving
Instructions
- Heat the oil in a large cast-iron skillet over medium heat until it reaches 350° F.
- In a medium bowl whisk together all of the ingredients until smooth. Transfer to a piping bag fitted with a large ½” tip.
- Slowly add the batter to the oil in a circular pattern. Fry until golden, about 3 minutes per side.
- Remove and place on a paper towel-lined plate to drain excess oil. Sprinkle with powdered erythritol and serve.
Michael Eric Berube says
I've always thought someone should have a food truck (or a restaurant in the Old Port) called K.P. (which plays as Kitchen Patrol from the military or Keto Paleo) that was strictly Keto and Paleo food. (Make it Locavore and Organic and you'll have us lined up all the way to the Arts District!)
Thanks for all the great recipes!
Linda Johnson says
What is whey protein isolate and why does the recipe need?
Alex Lester says
It is what creates the light airy inside and the crunchy outside. Whey protein isolate is just that, just whey protein. You should be able to find it at most grocers in the supplement sections with the protein powders.
Meika says
Hits the spot! I used vegetable oil because it’s all I had (will try coconut oil next time). I put allulose in my blender to make it powdered. Just like a funnel cake at the fair!
Dana Chambers says
What can I use instead of Whey Protein? If I omit it will the batter work the same. Thank you in advance. God bless. Dana
Cast Iron Keto says
Hi Dana, this recipe won't work without the Whey Protein Isolate and there's not a good direct replacement. Egg White Protein may work but we haven't tested it so we can't be sure and I'm sure the ratios would be different.
Sl says
Can I save the coconut oil to use another time?
Raquel says
I liked it when considering an alternative option to flour funnel cake… although the grittiness threw me off a little. I used egg white protein and it worked fine!
Janna Rodriguez says
Not a funnel cake, crispy yes flavorless, greasy and not chewy. might make a good coating like for chicken strips.