Japanese Sweet Potato Crème Brûlée is a delightful dessert that beautifully marries the sweet, earthy flavors of Japanese sweet potatoes with the creamy richness of custard. This unique twist on the classic crème brûlée is perfect for various occasions, from dinner parties to cozy family gatherings. The vibrant color and smooth texture make it visually appealing, while the caramelized sugar topping adds a satisfying crunch. You’ll surely impress your guests with this exotic yet comforting treat.

Jump to:
- Why You’ll Love This Recipe
- Tools and Preparation
- Essential Tools and Equipment
- Importance of Each Tool
- Ingredients
- For the Crème Brûlée Filling
- How to Make Japanese Sweet Potato Crème Brûlée
- Step 1: Preheat the Oven
- Step 2: Prepare the Custard Cream
- Step 3: Combine Egg Yolk with Milk Mixture
- Step 4: Finalize Custard Cream
- Step 5: Cool Custard Cream
- Step 6: Prepare Sweet Potatoes
- Step 7: Caramelize Sugar Topping
- How to Serve Japanese Sweet Potato Crème Brûlée
- Individual Serving Dishes
- Topped with Fresh Fruit
- Accompanied by Whipped Cream
- Drizzled with Honey
- With a Cup of Green Tea
- Garnished with Mint Leaves
- How to Perfect Japanese Sweet Potato Crème Brûlée
- Best Side Dishes for Japanese Sweet Potato Crème Brûlée
- Common Mistakes to Avoid
- Storage & Reheating Instructions
- Refrigerator Storage
- Freezing Japanese Sweet Potato Crème Brûlée
- Reheating Japanese Sweet Potato Crème Brûlée
- Frequently Asked Questions
- What is Japanese Sweet Potato Crème Brûlée?
- Can I use other types of potatoes?
- How do I know when my custard is thick enough?
- Can I customize the flavor of my crème brûlée?
- Final Thoughts
- 📖 Recipe Card
Why You’ll Love This Recipe
- Unique Flavors: The combination of roasted Japanese sweet potatoes and creamy custard creates a deliciously rich flavor profile.
- Easy to Make: With straightforward instructions, you can whip up this elegant dessert without any fuss.
- Versatile Presentation: Serve in the sweet potato skin for a rustic look or in ramekins for a more traditional touch.
- Perfect for Any Occasion: Whether it’s a holiday feast or a simple weeknight treat, this dessert fits right in.
- Impressive Texture: The crunchy caramelized top contrasts beautifully with the smooth custard beneath.
Tools and Preparation
To create your Japanese Sweet Potato Crème Brûlée, you’ll need some essential kitchen tools. Having the right equipment can make your cooking experience smoother and more enjoyable.
Essential Tools and Equipment
- Aluminum foil
- Saucepan
- Whisk
- Small bowl
- Ramekins or oven-safe dishes
- Blowtorch (for caramelizing)
Importance of Each Tool
- Aluminum foil: Helps retain moisture while roasting the sweet potatoes, ensuring they become tender and flavorful.
- Saucepan: Essential for making the custard cream; it allows even heat distribution for consistent cooking.
- Blowtorch: Provides precise control when caramelizing sugar, allowing you to achieve that perfect crunchy layer on top.

Ingredients
For the Crème Brûlée Filling
- 7 medium Japanese Sweet Potato
- ⅔ cup Sugar
- 3 Egg Yolk (omega 3)
- ¼ cup Cornstarch
- ¼ tsp Salt
- 3 cup Milk
- 2 tbsp Unsalted Butter
- 1 tsp Vanilla Extract
- 1/4 cup Sugar
How to Make Japanese Sweet Potato Crème Brûlée
Step 1: Preheat the Oven
Preheat your oven to 392℉ (200℃). Wrap each sweet potato individually in aluminum foil. Roast them for about 1 hour and 10 minutes until they are tender.
Step 2: Prepare the Custard Cream
While the sweet potatoes are roasting, prepare the custard cream:
1. In a saucepan, combine sugar, cornstarch, and salt.
2. Pour in milk and whisk until there are no lumps.
3. Heat over medium heat while whisking continuously until thickened.
Step 3: Combine Egg Yolk with Milk Mixture
In a small bowl:
1. Lightly beat the egg yolk.
2. Slowly stir about ¼ cup of the hot milk mixture into the egg yolk to temper it.
3. Return this egg mixture back to the saucepan.
Step 4: Finalize Custard Cream
Continue cooking over medium heat for an additional 2 minutes or until it thickens further. Remove from heat and stir in butter and vanilla extract until well combined.
Step 5: Cool Custard Cream
Transfer your custard cream to a bowl:
1. Cover it directly with plastic wrap pressed onto its surface to prevent forming a skin.
2. Allow it to cool at room temperature.
Step 6: Prepare Sweet Potatoes
Once roasted:
1. Let them cool for about 10 minutes.
2. Cut off the tops and scoop out approximately one-third of each sweet potato’s flesh.
3. Fill each sweet potato evenly with custard cream.
Step 7: Caramelize Sugar Topping
Sprinkle about 1 teaspoon of caster sugar evenly over each filled sweet potato:
1. Use a blowtorch to caramelize the sugar until it turns dark amber and bubbly.
2. Let it cool until hardened before serving.
Enjoy your homemade Japanese Sweet Potato Crème Brûlée!
How to Serve Japanese Sweet Potato Crème Brûlée
Japanese Sweet Potato Crème Brûlée is a delightful dessert that can be enjoyed in various ways. Whether you’re hosting a dinner party or enjoying a quiet evening at home, these serving suggestions will enhance your experience.
Individual Serving Dishes
- Use small ramekins for an elegant presentation. Each guest can have their own portion, making it a personal treat.
Topped with Fresh Fruit
- Add a few slices of fresh fruit like strawberries or kiwi on top. This adds a refreshing contrast to the rich custard and caramelized sugar.
Accompanied by Whipped Cream
- Serve with a dollop of lightly sweetened whipped cream. The creaminess complements the texture of the crème brûlée beautifully.
Drizzled with Honey
- A drizzle of honey over the top can add natural sweetness and depth. It’s perfect for those who enjoy a bit more flavor.
With a Cup of Green Tea
- Pairing this dessert with green tea provides a lovely balance. The bitterness of the tea enhances the sweetness of the crème brûlée.
Garnished with Mint Leaves
- A sprig of fresh mint on top not only adds color but also freshness. It’s an excellent way to elevate the dish visually and flavor-wise.
How to Perfect Japanese Sweet Potato Crème Brûlée
To achieve the perfect Japanese Sweet Potato Crème Brûlée, consider these helpful tips for flawless results every time.
- Roast until tender: Ensure your sweet potatoes are completely tender before using them. This guarantees a smooth custard texture.
- Whisk continuously: When heating your milk mixture, whisk constantly to prevent lumps from forming. This creates a creamy consistency in your custard.
- Cool properly: Allow the custard cream to cool at room temperature before using it. This helps in achieving a better texture when combined with the sweet potato.
- Use quality sugar: Choose fine caster sugar for caramelizing on top. It melts evenly and creates that beautiful amber crust you desire.
- Control blowtorch heat: When caramelizing, keep your blowtorch at a distance to avoid burning the sugar too quickly. Move it back and forth for even browning.
Best Side Dishes for Japanese Sweet Potato Crème Brûlée
Pairing side dishes with Japanese Sweet Potato Crème Brûlée can enhance your dining experience. Here are some delightful options to consider.
- Matcha Cookies: Lightly sweetened matcha cookies provide an earthy flavor that complements the dessert’s sweetness.
- Fruit Salad: A colorful mix of seasonal fruits adds freshness and balances out the richness of the crème brûlée.
- Mochi Ice Cream: Soft mochi filled with ice cream offers contrasting textures and flavors, making it a fun pairing.
- Sesame Seed Cookies: Crunchy cookies with sesame seeds bring nutty flavors that harmonize well with sweet potatoes.
- Pistachio Tarts: Nutty pistachio tarts add crunch and richness while enhancing the dessert’s overall appeal.
- Coconut Rice Pudding: Creamy coconut rice pudding can serve as a comforting side that pairs beautifully with sweet flavors.
Common Mistakes to Avoid
When making Japanese Sweet Potato Crème Brûlée, it’s easy to overlook some important steps. Here are common mistakes to avoid:
- Using too much cornstarch: Adding excess cornstarch can create a gummy texture. Be precise with your measurements for the best consistency.
- Skipping the cooling step: Not allowing the custard to cool properly can lead to curdling. Let it cool at room temperature before using it in the sweet potatoes.
- Not caramelizing evenly: If you don’t move the blowtorch evenly over the sugar, it may burn in spots. Maintain a consistent motion for even caramelization.
- Using cold ingredients: Cold milk or eggs can affect how well your custard thickens. Always use room temperature ingredients for a smoother mix.
- Overcooking the custard: Cooking beyond the desired thickness can cause separation. Watch closely and remove from heat as soon as it thickens.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container for up to 3 days.
- Keep away from strong odors, as custard can absorb flavors.
Freezing Japanese Sweet Potato Crème Brûlée
- Freeze for up to 1 month in a freezer-safe container.
- Thaw overnight in the refrigerator before reheating.
Reheating Japanese Sweet Potato Crème Brûlée
- Oven: Preheat oven to 350℉ (175℃). Place in an oven-safe dish until warmed through.
- Microwave: Heat in short bursts of 10-15 seconds, checking frequently to avoid overheating.
- Stovetop: Gently reheat over low heat while stirring until warm.
Frequently Asked Questions
Here are some frequently asked questions about making Japanese Sweet Potato Crème Brûlée:
What is Japanese Sweet Potato Crème Brûlée?
Japanese Sweet Potato Crème Brûlée is a rich dessert made from roasted sweet potatoes filled with creamy custard and topped with caramelized sugar.
Can I use other types of potatoes?
While this recipe highlights Japanese sweet potatoes, other varieties can be used but may alter the flavor and texture.
How do I know when my custard is thick enough?
The custard should coat the back of a spoon and leave a clear line when you run your finger through it.
Can I customize the flavor of my crème brûlée?
Absolutely! You can add flavors like matcha or coconut by mixing them into the custard base before cooking.
Final Thoughts
Japanese Sweet Potato Crème Brûlée is not only delicious but also versatile. You can modify flavors or presentation based on personal preferences. This delightful dessert combines creamy richness with sweet potato goodness, making it perfect for any occasion. Try your hand at this recipe today!
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Japanese Sweet Potato Crème Brûlée
- Total Time: 1 hour 30 minutes
- Yield: Serves approximately 7
Description
Japanese Sweet Potato Crème Brûlée is a delightful fusion of flavors that combines the natural sweetness and earthy richness of roasted Japanese sweet potatoes with a silky custard base. This unique dessert, topped with a perfectly caramelized sugar crust, offers an impressive presentation that’s sure to wow your guests. Suitable for any occasion—from festive gatherings to intimate dinners—this crème brûlée brings a comforting yet sophisticated touch to your dining experience. Whether served in rustic sweet potato skins or elegant ramekins, it promises to be a showstopper at your table.
Ingredients
- 7 medium Japanese sweet potatoes
- ⅔ cup sugar
- 3 egg yolks
- ¼ cup cornstarch
- ¼ tsp salt
- 3 cups milk
- 2 tbsp unsalted butter
- 1 tsp vanilla extract
- ¼ cup sugar (for caramelizing)
Instructions
- Preheat your oven to 392°F (200°C). Wrap each sweet potato in aluminum foil and roast for about 1 hour and 10 minutes until tender.
- In a saucepan, mix sugar, cornstarch, and salt. Gradually whisk in milk and heat over medium until thickened.
- Beat egg yolks in a small bowl, then temper with some hot milk mixture before returning it to the saucepan.
- Cook for an additional 2 minutes until thickened further. Stir in butter and vanilla, then cool the custard.
- After roasting, cool sweet potatoes briefly, cut off tops, scoop some flesh out, and fill with custard.
- Sprinkle sugar on top and use a blowtorch to caramelize until dark amber.
- Prep Time: 20 minutes
- Cook Time: 70 minutes
- Category: Dessert
- Method: Baking
- Cuisine: Japanese
Nutrition
- Serving Size: 1 filled half sweet potato (120g)
- Calories: 220
- Sugar: 24g
- Sodium: 60mg
- Fat: 8g
- Saturated Fat: 5g
- Unsaturated Fat: 2g
- Trans Fat: 0g
- Carbohydrates: 36g
- Fiber: 4g
- Protein: 5g
- Cholesterol: 115mg





