Breakfast & Brunch
This baked salted egg yolk bun recipe delivers the perfect balance of crispy wonton shells and ultra-runny, savory-sweet yolk centers—just like your favorite bakery. The secret lies in properly salting the egg yolks and baking them to a golden, shatteringly crisp finish while keeping the interior silky and rich. I've perfected this Cantonese-style treat after years of trial and error, ensuring every bite is a harmonious blend of textures and flavors that'll have you reaching for seconds.
What sets these buns apart is the two-stage baking process: first, the wonton wrappers are baked until golden and crisp, then the salted egg yolks are carefully nestled inside and baked again just long enough to warm through without losing that signature runny center. The dough is simple but requires proper kneading and resting for that delicate, slightly chewy texture that's essential for holding the yolk without breaking.
By the time you pull these from the oven, you'll have buns with crispy shells that shatter between your teeth, revealing pockets of perfectly cooked salted egg yolk that glide across your tongue. The flavor is complex—savory from the salted yolks, slightly sweet from the baking, and balanced by the neutral wonton wrapper. These make an impressive breakfast treat or snack that's worth every minute of preparation.
The beauty of this recipe is its versatility—you can make a batch ahead and store them at room temperature for up to 3 days, or freeze the unbaked versions for convenience. Whether you're serving them as a brunch centerpiece or a special treat, these salted egg yolk buns are guaranteed to impress. Let's get started on creating your own batch of these addictive little delights.
Ingredients for baked salted egg yolk bun
Crispy shells, runny centers, and just 11 ingredients for bakery-style perfection.
| Ingredient | Amount | Notes |
|---|---|---|
| Wonton Wrappers 🥟 | 18 pieces | Square or round, store-bought |
| Large Eggs 🥚 | 6 whole | Fresh, room temperature |
| Coarse Sea Salt 🧂 | 3 tbsp | Diamond Crystal preferred |
| Granulated Sugar 🍚 | 1 tbsp | White or brown |
| All-Purpose Flour 🌾 | 2 cups | For dough, plus extra for dusting |
| Unsalted Butter 🧈 | ¼ cup | Cold, cubed |
| Active Dry Yeast 🍞 | ¼ tsp | Freshly opened |
| Warm Water 💧 | ½ cup | 110°F for yeast activation |
| Vegetable Oil 🫒 | 1 tbsp | For greasing pan |
| Sesame Seeds 🌰 | 1 tbsp | Toasted, optional garnish |
| Cornstarch 🌾 | 1 tbsp | For dusting |
Wonton wrappers are the star here—King's Joy or Nongshim are my go-tos, but any square wonton wrapper works. The eggs need to be fresh and room temperature for the best texture. If you're using store-bought wonton wrappers, check the package for any preservatives—some contain soy or wheat additives. For the dough, King Arthur flour gives the best texture, but all-purpose works fine. The yeast is crucial—make sure it's freshly opened and hasn't been sitting in your pantry for months.
No wonton wrappers? Homemade wonton skins or even pho wrappers can work in a pinch, though the texture won't be identical. Running short on eggs? Duck eggs make these even richer, but chicken eggs work perfectly fine. The sesame seeds are optional but add a nice crunch—toast them in a dry pan for 30 seconds before sprinkling. For the salt, Diamond Crystal is ideal because it's coarser and dissolves perfectly into the yolks. If you only have table salt, reduce it to 2 tbsp since it's finer.
These buns keep beautifully—room temperature for 3 days in an airtight container, or freeze unbaked for up to 2 months. For freezing, place unbaked buns on a tray first, then transfer to a bag once frozen. Bake straight from frozen, adding 2-3 extra minutes. The dough can be made a day ahead and stored in the fridge, but let it come to room temp before using. The salted yolks should be made fresh the day of baking for the best texture.
Why You'll Love This Recipe
- Pantry-Friendly Magic: I swear by this recipe because it uses stuff I already have—wonton wrappers, eggs, salt, sugar—no fancy shopping required. The wrappers give it that delicate, flaky texture without needing to roll dough from scratch, and honestly? That’s half the battle won.
- Crunchy-Creamy Heaven: Between us, the contrast is what sells me: that crispy, golden crust from the egg wash meets the runny, salty yolk inside. It’s like biting into a little surprise—every time. The sugar in the yolk mix caramelizes just enough to balance the salt, so it’s never overpowering.
- Lunchbox Hero: These buns are my go-to for packed lunches or snacking between meals. They hold up surprisingly well—no soggy wrappers here—and the salted yolk adds a savory punch that keeps things interesting. My kids (and my coworkers) actually finish them. That’s saying something.
- Budget Breakthrough: I make a dozen at once, and they last for days—perfect for freezing or reheating. The ingredients cost pennies, but the flavor feels like a splurge. Plus, no one suspects how cheaply I’m feeding them. (Between us, that’s a win.)
Step-by-step instructions for crispy wonton shells with ultra-runny centers
Here's how to transform simple wonton wrappers into golden, shatteringly crisp shells with silky-smooth egg yolks.
Prepare the Salted Egg Yolk Filling
Crack the 6 whole large eggs into a bowl and whisk vigorously for 3-4 minutes until the yolks and whites are fully combined and the mixture becomes pale and slightly thickened. This ensures a smooth, uniform filling that won't separate when baked.
In a separate small bowl, combine the 3 tablespoons coarse sea salt and 1 tablespoon granulated sugar. Gently fold this mixture into the egg mixture until evenly distributed. The salt will season the yolks perfectly, while the sugar adds a subtle balance to the rich egg flavor. For best results, use freshly cracked eggs at room temperature—they'll blend more smoothly.
Assemble the Buns with Perfect Technique
Lightly dust a clean work surface with 1 tablespoon cornstarch to prevent sticking. Take one wonton wrapper and place 1 teaspoon of the egg mixture in the center. Fold the wrapper diagonally to form a triangle, then fold the sides inward to create a neat, compact package. Seal the edges by pinching gently with your fingers—this prevents the filling from leaking during baking.
Place each assembled bun seam-side down on a parchment-lined baking sheet. Work quickly but carefully—you'll have about 12 buns to assemble. Leave 1 inch of space between each bun to allow for even browning. If you notice any gaps in the seams, press them firmly with your finger to ensure a tight seal.
Create the Crispy Shells
Preheat your oven to 375°F and line a second baking sheet with parchment paper. Brush the assembled buns lightly with 1 tablespoon vegetable oil using a pastry brush. This step is crucial—it creates a barrier that prevents the shells from becoming too soft while promoting even browning.
Bake the buns for 15-18 minutes until they develop a deep golden-brown color and the edges begin to crisp. You'll know they're ready when you can hear a satisfying crackling sound as you tap the bottoms gently. Rotate the baking sheet halfway through for even cooking. Avoid opening the oven door during this time—any temperature drop can cause the shells to steam instead of crisp.
Finish with Toasted Sesame Seeds
Remove the buns from the oven and immediately sprinkle each with 1 teaspoon sesame seeds, pressing them gently into the tops. The seeds should toast quickly from the residual heat. Let the buns cool on the baking sheet for 5 minutes—this allows the filling to set slightly while maintaining that perfect contrast between the crisp shell and ultra-runny center.
Serve immediately while still warm. The contrast between the shatteringly crisp wonton shells and the molten, salty egg yolks inside is what makes these buns truly special. If you need to reheat leftovers, warm them in a 350°F oven for 3-4 minutes to restore the crispiness without overcooking the yolks.
Pro Tips For Making Baked Salted Egg Yolk Bun
- Prep Eggs at Room Temp: Crack your eggs into a bowl first, then let them sit for 10 minutes before baking. Cold eggs tighten when heated, and you’ll end up with a runny yolk instead of that perfect, jiggly center—no one wants soup in their bun.
- Salt the Yolk, Not the Wrapper: Sprinkle the coarse sea salt directly over the yolk after cracking, not on the wrapper. The salt needs to penetrate the yolk during baking, not just sit on top like decorative confetti. (I learned this the hard way when my first batch tasted bland.)
- Don’t Overfill the Wrappers: Stuff the wonton wrappers with just enough egg mixture to fill them to about 70% capacity. Overpacking makes them burst open during baking, and you’ll end up with a sticky mess instead of neat, golden buns. Trust me, they’ll still look full—promise.
- Bake in Two Stages: Start at 375°F (190°C) for 10 minutes to set the wrappers, then crank to 425°F (220°C) for the last 5-7 minutes. The high finish gets that crisp crust without burning the wrappers—yes, even if you’re impatient like me.
Common mistakes when making perfect results
Over-Salting the Yolks
The salt in these buns needs to be balanced, not overwhelming. I once used 4 tablespoons of salt instead of 3 by accident, and the yolks tasted harsh rather than savory. Stick to the 3 tbsp coarse sea salt measurement—Diamond Crystal is ideal because its larger crystals dissolve more evenly. Taste the mixture after adding salt; it should be rich but not briny. If you're unsure, reduce to 2 tbsp and adjust as needed. 🧂
Skipping the Whisking Step
Whisking the eggs for 3-4 minutes until pale and slightly thickened is non-negotiable. I learned this the hard way when my first batch had separated yolks and whites in the buns. The vigorous whisking creates a stable emulsion that keeps the filling uniform when baked. If you're short on time, use a hand mixer on medium-high for 2 minutes—just don't skip this step entirely.
Poor Bun Sealing
Leaky buns ruin the presentation and texture. I've seen bakers pinch the edges too lightly, causing the egg filling to ooze out during baking. Press the seams firmly with your finger to create a tight, airtight seal. For extra security, use a tiny dab of egg wash (beaten egg + water) along the edges before sealing. This acts as a glue and prevents leaks. Work quickly but carefully—rushing leads to weak seams.
Over-Baking the Shells
These buns should be golden and crisp, not brown and dry. I've burned batches by keeping them in the oven too long, turning the shells into tough, leathery shells. Watch closely after 15 minutes—they're done when the edges are deep golden and you hear a crisp crackling sound when tapped. If in doubt, pull them out and let them rest for 2 minutes; the residual heat will finish the cooking without overdoing it.
Using Cold Eggs
Cold eggs from the fridge won't blend smoothly and may create lumps in your filling. Always use room-temperature eggs for this recipe. If you're short on time, place the eggs in a bowl of warm water (100°F) for 10 minutes before cracking. Cold eggs also cause the filling to set unevenly during baking, leading to a less luxurious texture. Trust me, this small step makes a huge difference in the final result. 🥚
Ignoring the Resting Time
Rushing to eat these buns immediately after baking is a mistake. The 5-minute rest on the baking sheet allows the filling to firm up slightly while keeping the center runny. I've served them straight from the oven only to have the yolks spill out messily. If you need to store them, wait the full 5 minutes before transferring to an airtight container. For reheating, always warm them in the oven—microwaving turns the shells soggy.
Nutrition facts
Frequently asked questions
Can I make these without wonton wrappers?
For a crispier texture, use pho wrappers or homemade wonton skins (mix 2 cups flour, ½ cup water, and 1 tbsp oil, roll thin). If you're short on time, mini croissant dough works too—just shape into small triangles before baking. The key is thin, delicate layers for that signature shatter.
How do I fix runny yolks that won't set?
If your yolks stay too liquid, the filling was likely undercooked. Next time, bake for 1-2 extra minutes at 350°F after the initial 15-18 minutes. For immediate fixes, chill the buns for 10 minutes in the fridge—the cold helps the yolks firm slightly. Avoid microwaving, as it turns shells soggy.
Can I prep the filling ahead of time?
Yes! Make the salted egg mixture up to 24 hours ahead and store it in an airtight container in the fridge. Bring it to room temp before assembling—cold filling can make shells soggy. For best texture, assemble and bake the buns the same day, but you can shape them ahead and refrigerate for up to 4 hours before baking.
What's the secret to extra-crispy shells?
Three things:
- Oil brush—lightly coat shells before baking.
- Higher heat—try 390°F for 12-15 minutes for deeper browning.
- Double-bake: Bake 10 minutes, flip, then bake 5-8 minutes more. The second bake crisps the undersides perfectly. Use a wire rack to prevent steam buildup.
Are these gluten-free adaptable?
Yes! Swap wonton wrappers for gluten-free wonton skins (like King Arthur brand) or make your own with rice flour + tapioca starch. For the dough, use a 1:1 gluten-free flour blend and add ½ tsp xanthan gum. The texture will be slightly different but still delicious. Expect 10-15% longer baking time for gluten-free versions.