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Preparation Time: 20 minutes
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Cooking Time: 50-60 minutes
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Chilling Time: Minimum 4 hours (preferably overnight)
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Total Time: 5 hours 20 minutes
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Intensity: Medium. This recipe requires some patience for water baths and chilling, but the techniques are straightforward.
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Cuisine: Spanish-Inspired, Keto, Low-Carb, Gluten-Free
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Servings: 8
Nutritional Information (per serving)
Please note that these values are estimates and can vary based on the specific brands of ingredients used.
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Calories: 285
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Fat: 26g
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Protein: 7g
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Total Carbohydrates: 4g
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Dietary Fiber: 0g
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Net Carbs: 4g
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Sugar Alcohols: 8g (from the powdered allulose)
Ingredients
For the Sugar-Free “Caramel”:
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1 cup (200g) allulose (see note below)
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2 tablespoons water
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A pinch of sea salt
For the Custard:
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5 large eggs
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1 large egg yolk (for extra richness)
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2 cups (480 ml) heavy whipping cream
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1 cup (240 ml) unsweetened almond milk (or full-fat coconut milk for a nuttier flavor)
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1/2 cup (80g) granulated allulose or erythritol based sweetener (like Swerve)
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1 tablespoon sugar-free vanilla extract
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Pinch of sea salt
Special Equipment:
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8 (6-ounce) ramekins or one 2-quart oven-safe dish
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A large, deep roasting pan (for the water bath)
A Note on Sweeteners for Keto Flan
The choice of sweetener is crucial for this recipe.
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For the Caramel: You must use Allulose. Allulose caramelizes and browns just like real sugar. Other sweeteners like erythritol will crystallize into a hard, white rock and will not melt into a liquid caramel. Do not substitute this ingredient.
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For the Custard: You can use granulated allulose or a erythritol-based sweetener (like Swerve). Allulose will result in a softer set, while erythritol will yield a firmer, more traditional flan texture.
Instructions
Part 1: Make the Keto Caramel (Intensity: Medium)
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Prepare the Ramekins: Place your eight ramekins in the refrigerator to chill. This will help the caramel set faster when you pour it in.
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Melt the Sweetener: In a small, heavy-bottomed saucepan, combine the 1 cup of allulose and 2 tablespoons of water. Stir gently just to combine, making sure no dry clumps remain.
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Cook the Caramel: Place the pan over medium heat. Allow the mixture to come to a boil. Do not stir it from this point on. Swirl the pan occasionally to ensure even heating. The mixture will bubble vigorously and then start to turn a deep amber color. This process can take 5-8 minutes. Watch it closely—allulose can burn quickly once it starts to change color.
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Finish and Pour: As soon as it reaches a beautiful, golden-amber color (like maple syrup), remove it from the heat. Immediately add the pinch of sea salt (this balances the sweetness). Be careful, as it will bubble up vigorously. Swirl to combine.
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Coat the Ramekins: Working quickly before the caramel hardens, pour about 1 tablespoon of the hot caramel into the bottom of each chilled ramekin. Tilt the ramekin to coat the bottom evenly. Set the ramekins aside. The caramel will harden as it cools.
Part 2: Make the Custard (Intensity: Easy)
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Preheat Oven: Preheat your oven to 325°F (160°C).
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Heat the Dairy: In a medium saucepan, combine the heavy whipping cream and unsweetened almond milk. Place over medium heat and warm until it is hot to the touch and small bubbles form around the edges. Do not let it boil. Remove from heat.
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Whisk the Eggs: While the cream is heating, crack the 5 large eggs and 1 egg yolk into a large mixing bowl. Add the 1/2 cup of granulated sweetener, the vanilla extract, and a pinch of salt. Whisk vigorously until the mixture is pale, frothy, and the sweetener has completely dissolved.
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Temper the Eggs: This is the most important step for a silky-smooth flan. Slowly, while whisking constantly, pour about 1 cup of the hot cream mixture into the egg mixture. This gently raises the temperature of the eggs without scrambling them.
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Combine the Mixtures: Once tempered, pour the egg mixture back into the saucepan with the remaining hot cream. Whisk until fully combined. The mixture will be thin and very fragrant.
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Strain (Optional but Recommended): For the absolute silkiest texture, pour the entire custard through a fine-mesh sieve into a large measuring cup or a bowl with a spout. This will catch any accidental bits of cooked egg.
Part 3: Bake in a Water Bath (Intensity: Medium)
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Fill the Pan: Place the caramel-coated ramekins into the large roasting pan.
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Divide the Custard: Carefully pour the custard mixture into the ramekins, dividing it evenly among them, filling them almost to the top.
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Create the Water Bath: Place the roasting pan on the middle rack of your preheated oven. Carefully pour hot (not boiling) water into the roasting pan until it reaches about halfway up the sides of the ramekins. Be careful not to splash any water into the custards.
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Bake: Bake for 50-60 minutes, or until the flan is set around the edges but still has a slight jiggle in the very center. A knife inserted near the edge should come out clean. The timing may vary depending on your oven and ramekin size.
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Cool Down: Carefully remove the roasting pan from the oven. Using tongs or a spatula, transfer the ramekins to a wire rack to cool completely to room temperature.
Part 4: Chill and Serve (Intensity: Easy)
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Chill: Once cool, cover each ramekin tightly with plastic wrap and refrigerate for at least 4 hours, but preferably overnight. This allows the flan to set properly and the flavors to meld.
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Unmold: To serve, run a thin, sharp knife around the edge of each ramekin to loosen the flan. Place a serving plate with a slight lip (to catch the caramel sauce) upside down on top of the ramekin. In one confident motion, flip the ramekin and plate over. Give it a gentle shake if needed. The flan should release onto the plate with a pool of liquid “caramel” sauce surrounding it.
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Serve: Serve immediately, spooning some of the delicious caramel sauce from the plate over the top of the flan.