Sometimes I get a craving for flan but don’t want to make a big batch. That’s when I came up with this brilliant single-serve milk carton flan.

Instead of using a ramekin, I made it right in an empty milk carton (a ramekin still works though)! If you’re in the mood for a quick, individual-sized dessert, give my recipe a try.

Ingredients

To make this delicious “flan for one,” you’ll only need a few simple ingredients that are likely already in your kitchen:

  • Full cream milk: The key to a rich, creamy flan. Using full cream milk instead of low-fat or non-fat varieties ensures the best texture and flavor.
  • Eggs: Essential for binding the ingredients and giving the flan its smooth, custard-like consistency.
  • Sugar: Needed for the caramel syrup that coats the bottom of your milk carton, adding a sweet and slightly bitter contrast to the creamy flan.
  • Water: Used to dissolve the sugar and create the caramel syrup for the flan.
  • Lime or lemon juice: It helps prevent the caramel syrup from crystallizing.

Instructions

1

For the Caramel Syrup

  • Empty the milk from the carton completely. Take a knife and create a small tear at the bottom of the carton. Afterward, cover the tear with tape. You now have an instant mold for your single-serve flan.
  • In Germany, I usually use a 500ml milk carton, but if you can’t find small cartons where you live (like in the U.S.), a 6-ounce ramekin works just as well.
Single Serve Flan Instructions
  • Start by combining the sugar and water in a saucepan over medium heat. Be careful not to stir the mixture too much, as this can cause the sugar to crystallize and turn solid.
Single Serve Flan Instructions
  • Once the sugar and water have combined, turn the heat up to medium-high and let the mixture melt and start bubbling. Keep a close eye on it, as it will take approximately 5-7 minutes to bubble.
  • Keep monitoring it until it starts to change color to a golden-orange or amber color. This indicates that the caramelization process has begun, and you can swirl the pot to move the syrup around.
Single Serve Flan Instructions
  • When the syrup looks dark orange, which should take only a minute, remove it from the heat, quickly add the lime juice and continue to swirl it around until you achieve an even color.
  • Quickly pour the caramel syrup into the milk carton and tilt the carton to ensure the bottom is evenly coated. Set the carton aside to cool.
Single Serve Flan Instructions
2

For the Custard

  • Start by beating the eggs lightly in a large bowl.
Single Serve Flan Instructions
  • Heat the milk and sugar in a saucepan over medium-low heat, making sure it doesn’t come to a boil. Stir occasionally until the sugar dissolves completely.
Single Serve Flan Instructions
  • Slowly pour the hot milk over the beaten eggs while stirring continuously. Add the vanilla extract and mix well. To make the mixture even smoother, strain it through a fine sieve.
Single Serve Flan Instructions
  • Pour the flan mixture into the milk carton. Use a binder clip to secure the top of the carton tightly. In case you use ramekins, cover the ramekins with Aluminium foil.
Single Serve Flan Instructions 9

Three ways to cook

You have three options to choose from when cooking the flan. Just pick the method that best fits your preferences:

1

Steaming with an Instant Pot

Single Serve Flan Instructions
  • Add 250 ml (1 cup) of water in Instant Pot Pressure Cooker. Place steamer rack inside the pressure cooker. Put the closed milk carton on the rack.
  • Check the Steam Release Valve to ensure it is in the “Sealing” Position.
  • Select “Steam” and pressure cook at High Pressure for 3 minutes, then let it naturally release for 12-14 minutes.
  • Once the Floating Valve drops, carefully open the lid.
  • Refrigerate the flan for at least 6 hours (preferably overnight) to firm it up.
2

Steaming with a Steamer

Single Serve Flan Instructions
  • Steam the flan over low heat (where the water is gently bubbling, not boiling) for 20-30 minutes.
  • To determine if the flan is cooked through, insert a toothpick into the mixture. If it comes out clean, it’s ready.
  • Take the flan out of the steamer and let it cool while keeping it covered. Place the flan in the refrigerator overnight to help it set.
3

Oven-baking

  • Preheat the oven at 150°C (300°F) for 15 minutes.
  • Prepare a baking pan by placing a small towel at the bottom (this helps regulate the heat and ensures a smooth and silky flan).
  • Pour hot water into the pan, making sure it reaches about halfway up the sides of your flan inside the milk carton or your ramekins.
  • Bake the flan in the preheated oven for 25-40 minutes, depending on the size of your flan. To check if it’s done, insert a toothpick into the flan. If it comes out clean, it’s ready.
  • Once cooked, remove the flan from the oven and allow it to cool while still covered. Refrigerate the flan overnight to help it set.

How to serve

A Single Serve Mini Flan on a plate with caramel sauce on top.
  • Remove the tap at the bottom of the milk carton. Use a pair of scissors to carefully cut off the top part of the milk carton. Then run a knife along the edges of the carton to loosen the flan. and invert the carton onto a plate to release the dessert.
  • Serve the Flan cold and enjoy its creamy texture and sweet caramel flavor.

FAQs

More Delicious Dessert Recipes

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Mini flan recipe: A Single Serve Flan on a plate with caramel sauce on top.

Milk Carton Flan (Flan for One)

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Sometimes I crave flan but don’t want to make a large batch. That’s when I came up with this brilliant idea: a single-serve flan made in a milk carton. This flan offers a deliciously creamy dessert topped with delightful caramel sauce, perfectly portioned for one person.
5 from 2 votes
Prep Time 15 minutes
Cook Time 25 minutes
Course Dessert
Cuisine Other
Servings 1 person

Equipment

  • 1 500ml Milk Carton (or a 6-oz ramekin)
  • 1 Instant Pot (or a steamer or an oven)
  • 1 Saucepan
  • 1 mixing bowl
  • 1 Whisk
  • 1 Fine mesh strainer

Ingredients
  

Caramel syrup

  • 2 tbsp sugar
  • ½ tbsp water
  • 1 tsp lime/lemon juice

Flan

  • 1 Egg
  • 1 Egg yolks
  • 0.7 cup Full cream milk (170ml)
  • tbsp Sugar

Instructions
 

Making the Caramel Syrup:

  • First, empty the milk carton. Then, using a knife, carefully create a small tear at the bottom of the carton. Cover the tear with tape, and now you have an instant mold for your flan.
  • To make the caramel sauce, combine sugar and water in a saucepan over medium heat. Avoid stirring excessively to prevent crystallization. Increase the heat to medium-high and let the mixture melt and start bubbling.
  • Monitor it closely for about 5-7 minutes until it turns a golden-orange or amber color. Swirl the pot gently to distribute heat to the syrup.
  • Once the syrup reaches a dark orange hue, remove it from the heat, add the lime juice and continue swirling to achieve an even color.
  • Pour the caramel syrup quickly into the milk carton, ensuring the bottom is evenly coated. Set the carton aside to cool.

Making the Custard:

  • Begin by lightly beating the eggs in a large bowl.
  • In a saucepan, heat the milk and sugar over medium-low heat, ensuring it doesn't reach a boiling point. Stir occasionally until the sugar completely dissolves.
  • Gradually pour the hot milk into the beaten eggs while stirring constantly. Add the vanilla extract. For an even smoother mixture, strain it through a fine sieve.
  • Pour the flan mixture into the milk carton. Secure the top of the carton tightly with a binder clip. If you're using ramekins instead, cover them with aluminum foil.

1. Steaming flan with an Instant Pot:

  • To start, pour 250 ml (1 cup) of water into your Instant Pot Pressure Cooker. Next, put the steamer rack inside the cooker and place the closed milk carton on top of the rack.
  • Make sure the Steam Release Valve is set to the "Sealing" Position.
  • Choose the "Steam" setting and set the pressure to High. Allow it to pressure cook for 3 minutes, and then let the pressure release naturally for 12-14 minutes.
  • Once the Floating Valve has dropped, cautiously open the lid.
  • To allow the flan to set up properly, refrigerate the flan for at least 6 hours, or better yet, overnight.

2. Steaming flan with a Steamer:

  • Steam the flan over low heat for about 20-30 minutes (ensuring that the water is gently bubbling rather than boiling).
  • To check for doneness, insert a toothpick into the flan. If it comes out clean, it means the flan is ready.
  • Remove the flan from the steamer and allow it to cool while keeping it covered. Then, place the flan in the refrigerator overnight to help it firm up.

3. Oven-baking the flan:

  • Preheat your oven to 150°C (or 300°F)
  • Prepare a baking pan by placing a small towel at the bottom to ensure even heat distribution and a smooth texture for your flan.
  • Fill the pan with hot water, ensuring it reaches about halfway up the sides of the flan.
  • Place the flan in the preheated oven and bake for 25-40 minutes, adjusting the time based on the size of your flan. To check for doneness, insert a toothpick into the flan. If it comes out clean, it's ready.
  • Once cooked, carefully remove the flan from the oven and allow it to cool while keeping it covered. Refrigerate the flan overnight to help the flan set.

Serve the flan:

  • First, take off the tap at the bottom of the milk carton. Next, use a pair of scissors to carefully chop off the upper part of the carton.
  • Then, use a knife to gently slide along the edges of the carton to loosen the flan. Finally, flip the carton upside down onto a plate to let the dessert come out.
Tried this recipe?Let us know how it was!
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