Easy Keto Flan: A Low-Carb Twist on a Classic Dessert

sugar free leche flan

Key Takeaways:

  • Keto Mexican flan has just 4 main ingredients but tastes incredibly rich and decadent.
  • Making your own simple caramel sauce with allulose is easy and keeps this dessert low-carb.
  • Baking flan in a water bath gives it a perfectly smooth, velvety texture.


Flan is a traditional Mexican dessert with a creamy, pudding-like texture. Though delicious, it’s typically high in sugar and off-limits for low-carb diets. However, with just a few easy substitutions, we can transform flan into a keto-friendly treat.

In this post, we’ll explore how to make a delicious Mexican flan that fits into a keto lifestyle. With only 4 main ingredients and a sugar-free caramel topping, you can enjoy this classic dessert guilt-free. Let’s dive in!

Crafting the Flan Custard

The base of our keto flan comes together quickly. Here’s what you’ll need:

  • 2 cups of heavy cream
  • 4 eggs
  • ⅔ cup of sweetener 
  • 1 tablespoon of vanilla extract
  • Optional: For additional sweetness, you can add stevia 

Simply crack the eggs into a bowl, then add the heavy cream, vanilla, and allulose. Use a hand mixer to blend everything until smooth and uniform. Avoid overmixing, as that can affect the flan’s finished texture.

And that’s it – our flan custard is ready for baking!

Making a Low-Carb Caramel Sauce

No flan is complete without a glossy caramel sauce. To keep ours keto-approved, we’ll make a simple caramel topping with allulose.

Here’s how:

  • In a small saucepan, combine 1/2 cup allulose with 2 tablespoons water.
  • Heat over medium-high, stirring frequently, until the mixture simmers and turns amber brown.
  • Remove from heat and allow to cool and thicken slightly.
  • Pour the caramel sauce into your baking pan and spread evenly over the bottom.

Once cooled, this sugar-free caramel sauce is the perfect starting point for our flan.

Baking for a Smooth, Creamy Texture

To achieve flan’s signature velvety texture, we need to bake it in a water bath. Here are the steps:

  • Preheat oven to 350°F.
  • Prepare your baking pan by coating with butter or nonstick spray.
  • Pour the flan batter over the caramel sauce in the pan.
  • Place the flan pan into a larger baking dish and fill with 1 inch of nearly boiling water.
  • Bake for 45-50 minutes until set.

The water bath allows the flan to cook gently and evenly, preventing cracks on the surface.

Serving Up Your Keto Mexican Flan

Once baked, allow the flan to cool completely before attempting to unmold. Run a butter knife around the edges to help release it cleanly.

To serve:

  • Invert a plate over the top of the pan.
  • Carefully flip both over so the pan is on top and the plate is underneath.
  • Lift the pan off to reveal the caramel-coated flan.

Spoon the glossy caramel sauce over each slice and enjoy this rich, decadent dessert – now keto-approved!

What to Do Next?

Try more keto twists on classic desserts like:

  • Sugar-free cheesecake
  • Low-carb chocolate mousse
  • Keto coconut macaroons

Let us know if you try this keto Mexican flan recipe! Share your thoughts in the comments.

Frequently Asked Questions

What can I use instead of allulose?

Monk fruit or stevia are good sugar-free alternatives. You may need to adjust the quantity to reach desired sweetness.

Can I make this flan dairy-free?

Yes! Try using full-fat coconut milk instead of heavy cream.

Should I unmold the flan when it’s warm or cold?

Always allow flan to cool completely before unmolding for clean results.

How do I know when the flan is done baking?

It should still jiggle slightly in the center when done. The surface will be set and a toothpick inserted should come out clean.


With just a few simple substitutions, we’ve turned a traditional Mexican flan into a keto-friendly sensation. The creaminess comes from simple ingredients like eggs and cream, while allulose lends a touch of sweetness. Topped with an easy sugar-free caramel, this dessert will be your new favorite low-carb indulgence. Give keto flan a try today!

About the author:
Shahane Tan

Shahane Tan

Shahane Tan, a Nursing graduate from Xavier University, combines healthcare expertise with roles in real estate and life coaching. Passionate about holistic well-being, her insights bridge science and practicality. Explore her balanced wellness approach at JustFlourishing.com.


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