Sugar Free King Cake: The PERFECT Diabetic Dessert (Keto + Low Carb!)

Y’all… if king cake season has you feelin’ left out because you’re watching sugar, carbs, or blood sugar—NOT this year.

This sugar free king cake is soft, rich, and has that creamy filling that tastes like you “cheated”… but you didn’t. It’s a diabetic dessert that still brings the Mardi Gras magic—without the sugar crash.

And the best part? It’s baked like easy bars, so you can serve a crowd (or hide a few in the fridge like a smart Louisiana queen).

Why You’ll Love This Sugar Free King Cake

• Tastes like king cake vibes without the sugar bomb
• Bakes in an 8×8 pan = no braiding, no drama
• Cream cheese layer = that “bakery style” feel
• Made with almond flour for a low carb king cake
• Perfect make-ahead Mardi Gras dessert for parties

Is King Cake Keto?

• Traditional king cake is not keto (hello refined flour + sugar).
• This keto king cake version:
  • Uses almond flour
  • Uses Swerve (no added sugar)
  • Keeps carbs lower and blood sugar friendlier
    
• So yes, this recipe is king cake keto-style and fits a low sugar king cake plan.

Ingredients You’ll Need

King Cake Base

• 1/2 cup light sour cream
• 1/3 cup water
• 1 tbsp vanilla extract
• 2 eggs
• 1 egg yolk
• 3 tbsp butter (melted)

Dry Ingredients

• 3 1/4 cup almond flour
• 1/4 cup Swerve granulated
• 1 tsp baking powder
• 1/4 tsp salt

Cream Cheese Filling

• 8 oz light cream cheese (1 block)
• 1/2 cup Swerve confectioners
• 1 tsp vanilla extract

Glaze + Topping

• 1/3 cup Fairlife Milk
• 1/4 cup Swerve confectioners
• Colored Swerve sugar (purple/green/gold)

Equipment You’ll Need

• 8×8 baking pan
• Non-stick foil or parchment paper
• 2 mixing bowls
• Hand mixer
• Spatula
• Measuring cups/spoons

How To Make Sugar Free King Cake (Step-By-Step)

1) Prep

• Preheat oven to 325°F
• Line an 8×8 pan with non-stick foil or parchment paper

2) Mix the wet ingredients

In a large bowl combine:

• Light sour cream, water, vanilla, eggs, egg yolk, melted butter
  Then:
• Beat with hand mixer on low for 2 minutes

3) Add the dry ingredients

• Turn off mixer
• Slowly add: almond flour, Swerve granulated, baking powder, salt
• Fold with spatula until mostly combined
  Then:
• Beat on low for 2 minutes until smooth

4) Make the cream cheese filling

In a small bowl:

• Light cream cheese, Swerve confectioners, vanilla
  Then:
• Beat on low for 2 minutes until creamy

5) Layer it like a king cake bar

Layer in this order:

• 1/2 almond flour batter
• All cream cheese filling
• Remaining 1/2 batter

6) Bake

• Bake 45–55 minutes or until set
  Doneness tip: Center should not jiggle like liquid—think “set cheesecake bar.”

7) Glaze + sparkle (the Mardi Gras part!)

• Mix Fairlife + Swerve confectioners
• Pour glaze over cooled bars
• Sprinkle colored Swerve sugar (purple/green/gold)

8) Slice + serve

• Cut into small bars
• Serve chilled or room temp

Shelly Dietitian Tip 

Slice into smaller bars for parties—your taste buds get the treat, and your blood sugar gets a break. That’s how we do healthy Mardi Gras without feeling deprived!

As a dietitian, I love desserts like this because you can keep tradition on the table while still supporting blood sugar goals.

Health Benefits 

Swerve (Erythritol Blend)

• Sweet taste without added sugar
• Helpful for people building low sugar routines
• Great for making sugar free dessert recipes feel normal again
  Tip: Some folks get tummy upset with sugar alcohols—start with smaller portions.

Almond Flour

• Lower carb than regular flour
• Adds healthy fats + some fiber
• Naturally gluten-free, so it works great for gluten free king cake needs

Light Sour Cream

• Adds moisture (so almond flour baked goods don’t dry out)
• Helps the texture feel more “cakey” instead of crumbly

Light Cream Cheese

• Gives that rich filling with fewer calories than full-fat
• Adds creaminess + a little protein for better staying power

 Fairlife Milk

• Ultra-filtered milk with higher protein and lower sugar than regular milk
• Naturally lactose-free, making it easier to digest
• Provides calcium + vitamin D for bone health
• Helps balance the dessert by adding protein to slow blood sugar response

Shelly Dietitian Tip:
Using Fairlife instead of heavy cream is a smart swap when you want creaminess without excess saturated fat, especially for people managing diabetes or insulin resistance.

Variations (So You Can Make It Your “Signature King Cake”)

• Cinnamon “traditional vibe”: add 1–2 tsp cinnamon to the batter OR swirl cinnamon into the cream cheese layer.
• Lemon cream cheese: add 1 tsp lemon zest to filling.
• Pecan praline style (sugar free): sprinkle chopped pecans on top before baking, then glaze.
• Strawberry Mardi Gras twist: add a few drops strawberry extract to glaze (or a tiny bit of sugar-free strawberry syrup).
• Extra bakery flavor: swap vanilla extract for vanilla + butter extract (½ and ½).

Storage Tips for Your Sugar Free King Cake

• Thaw overnight in fridge, glaze before serving
• Store covered in the fridge up to 5 days
• Freeze bars (unglazed is best) up to 2 months

Net Carbs: Approximately 4g net carbs per serving, making this sugar free king cake a smart diabetic-friendly Mardi Gras dessert.

Throw Me Something!

Alright bestie—if you make this sugar free king cake, I need you to do two things:

• Leave a comment and tell me which color you sprinkled first
• Share it on Pinterest so the whole internet can have a healthier Mardi Gras moment

But don’t click away just yet, bestie!

Browse a few more recipes here on Skinny Louisiana including my:

• Sugar Free Fudge
• Sugar Free Pecan Fudge

Then head over to Wholesome Yum for even more keto and sugar-free treats—including this No Bake Chocolate Cheesecake – because one good dessert recipe always leads to five more!

Happy baking,
Shelly ❤️ (Skinny Louisiana)
Queen of Healthy Cajun Cuisine — and yes, we can keep tradition AND keep it blood-sugar friendly.