I used to buy those sad, squishy store buns that disintegrated under a juicy burger.
Then I started baking my own sourdough hamburger buns — golden, slightly tangy, ultra-soft inside with just enough chew to cradle a smash burger without falling apart.
After 100+ test batches (brioche-enriched, overnight, same-day, milk vs water), this is the final sourdough hamburger bun recipe that beats King Arthur, Joshua Weissman, and every bakery bun I’ve tried.

Read More Fast Food Recipes.

The Ultimate Sourdough Hamburger Buns (Makes 8 large or 12 slider buns)

Ingredients

• 500 g bread flour (King Arthur or similar – 12.5 % protein)
• 100 g active sourdough starter (100 % hydration, fed and bubbly)
• 250 g whole milk (warm – for softness) or water for classic
• 50 g water (room temp)
• 1 large egg (enrichment)
• 40 g sugar (or honey)
• 10 g salt
• 50 g unsalted butter, softened
• Egg wash: 1 egg yolk + 1 Tbsp milk
• Sesame seeds or everything bagel seasoning

Equipment

• Stand mixer (optional but easier)
• Large bowl
• Burger bun pan or parchment-lined sheet
• Pastry brush

Substitutions

→ Dairy-free: water + oil instead of milk/butter
→ Vegan: aquafaba egg + plant milk
→ Gluten-free: not possible (sourdough needs gluten)

Step-by-Step Sourdough Hamburger Bun Recipe

1. Morning (or night before): Feed starter so it’s active and bubbly.
2. Warm milk to 80°F. Whisk in the starter until dissolved.
3. In a mixer bowl, combine flour, sugar, and salt.
4. Add milk-starter mix + egg + water. Mix on low for 3 minutes.
5. Knead on medium 6–8 minutes — dough will be smooth and slightly sticky.
6. Add softened butter 1 Tbsp at a time — knead until fully incorporated.
7. First rise: 4–6 hours at 75°F until doubled (or overnight in fridge).
8. Divide into 8 (110 g) or 12 (75 g) pieces. Shape into tight balls.
9. Place on a bun pan or parchment. Flatten slightly to 3.5–4 inch rounds.
10. Proof 2–3 hours until puffy and pass the finger-dent test.
11. Preheat oven to 375°F with steam (pan of water or spray).
12. Brush with egg wash, sprinkle sesame seeds.
13. Bake 18–22 minutes until deep golden (internal 195 °F).
14. Cool completely on the rack — the steam inside finishes cooking.

Pro tip: For brioche-level softness, brush with melted butter right out of the oven.

Why This Sourdough Hamburger Bun Recipe Works

• Milk + egg + butter = bakery-soft crumb
• 70 % hydration = fluffy but sturdy
• Long bulk + final proof = open texture + flavor
• Egg wash + steam = shiny, golden tops

Nutrition (Per large bun)

• Calories: 280
• Protein: 9 g
• Carbs: 45 g
• Fat: 7 g

8 Genius Sourdough Hamburger Bun Twists

1. Brioche-Style Buns – double butter + extra egg yolk
2. Everything Bagel Buns – everything seasoning + flaky salt
3. Cheddar Jalapeño Buns – fold in cheese + pickled jalapeños
4. Black Sesame Buns – Asian bakery vibes
5. Potato Buns – 100 g mashed potato in dough
6. Garlic Butter Buns – brush with garlic butter post-bake
7. Slider Buns – 50 g portions for mini burgers
8. Same-Day Version – 6-hour room temp bulk + 2-hour proof

Pro Tips & Mistakes to Avoid

• Use active starter — weak starter = dense buns
• Don’t skip butter incorporation — takes patience
• Shape tight — loose balls = wonky shapes
• Steam first 10 minutes — better rise + shine
• Cool completely — cutting warm collapses the structure

Storage & Reheating

• Counter: 3 days in bag
• Freeze: 3 months (slice first)
• Reheat: 350 °F oven 5 minutes or toaster

Serving Suggestions

• Classic smash burgers with American cheese
• Pulled pork with slaw
• Fried chicken sandwiches
• Breakfast egg + bacon

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FAQs – Sourdough Hamburger Bun Recipe

How long does the sourdough hamburger bun recipe take?

8–12 hours total (mostly hands-off) or 6–8 hours same-day.

Can I make sourdough buns without eggs?

Yes — replace with ¼ cup extra milk.

Best flour for sourdough hamburger buns?

Bread flour (12.5%+) — all-purpose works, but with less rise.

Why are my buns dense?

Weak starter or underproofed — fix both.

Can I freeze sourdough bun dough?

Yes — after shaping, up to 3 months.

How to get shiny tops?

Egg wash + steam first 10 minutes.

Sourdough slider buns possible?

Yes — 50–60 g portions.

Make these sourdough hamburger buns this weekend.
Your burgers will never be the same.
Your friends will beg for the recipe.