Sourdough Onion Bagels

Featured in: Comfort Cravings

These sourdough bagels combine a tangy, fermented base with chewy texture and a rich flavor profile. The dough is made with bread and whole wheat flour, then left to ferment overnight for depth. Bagels are boiled briefly in a malt syrup and baking soda water bath before baking to achieve the classic crust. Sautéed yellow onions add a sweet, caramelized topping, bringing a savory-sweet contrast. Ideal for breakfast or sandwiches, they offer satisfying bite and aromatic notes.

Updated on Mon, 16 Feb 2026 06:00:50 GMT
Chewy sourdough bagels topped with golden sautéed onions, perfect for a savory breakfast or hearty sandwich.  Save
Chewy sourdough bagels topped with golden sautéed onions, perfect for a savory breakfast or hearty sandwich. | sugarprairie.com

There is nothing quite like the aroma of fresh bagels baking in the oven, especially when they are topped with sweet, golden sautéed onions. These sourdough onion bagels offer a perfect balance of a chewy interior and a tangy crust, making them an ideal choice for a savory breakfast or a hearty lunch sandwich that will impress any guest at your table.

Chewy sourdough bagels topped with golden sautéed onions, perfect for a savory breakfast or hearty sandwich.  Save
Chewy sourdough bagels topped with golden sautéed onions, perfect for a savory breakfast or hearty sandwich. | sugarprairie.com

Creating bagels at home is a rewarding process that bridges the gap between traditional baking and modern flavor profiles. By using a sourdough base and allowing for a long fermentation period, you develop deep flavors and a texture that is both soft and resilient. The addition of caramelized onions on top adds a layer of richness that elevates the humble bagel into something truly special.

Ingredients

  • Sourdough Starter: 100 g active sourdough starter (100% hydration)
  • Dough: 400 g bread flour, 50 g whole wheat flour, 10 g sea salt, 25 g granulated sugar, 240 ml lukewarm water
  • Onion Topping: 1 large yellow onion (finely chopped), 1 tbsp olive oil or unsalted butter, 1/2 tsp sea salt
  • Boiling: 2 L water, 1 tbsp barley malt syrup or honey, 1 tsp baking soda
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Instructions

1. Prepare the onions
In a skillet, heat olive oil or butter over medium heat. Add onions and 1/2 tsp salt. Sauté for 8–10 minutes until soft and golden. Set aside to cool.
2. Make the dough
In a large bowl, mix sourdough starter, bread flour, whole wheat flour, salt, sugar, and lukewarm water until a shaggy dough forms.
3. Knead and ferment
Knead for 8–10 minutes until smooth and elastic. Cover and let rest for 4 hours at room temperature, performing two stretch-and-folds during the first 2 hours (every 30 minutes).
4. Bulk ferment
Cover and refrigerate overnight (8–12 hours) for best flavor.
5. Shape bagels
The next day, divide dough into 8 equal pieces. Shape each into a ball, then poke a hole in the center and stretch to form a bagel shape (about 2 inches diameter hole).
6. Proof
Place shaped bagels on a parchment-lined baking sheet, cover, and let rise for 1–2 hours at room temperature until slightly puffy.
7. Boil bagels
Preheat oven to 220°C (425°F). Bring water, barley malt syrup (or honey), and baking soda to a boil in a large pot. Boil bagels 1–2 at a time, 1 minute per side. Remove with a slotted spoon and return to baking sheet.
8. Top and bake
While bagels are still damp, press sautéed onions onto the tops. Bake 20–25 minutes until golden brown and cooked through.
9. Cool
Transfer to a wire rack to cool before slicing.

Zusatztipps für die Zubereitung

For the best results, use high-protein bread flour to ensure that signature bagel chew. The boiling step is essential for gelatinizing the starch on the surface, which creates the shiny, crisp crust that contrasts so well with the soft interior. Additionally, ensuring your sourdough starter is active and at its peak before mixing will lead to a better rise.

Varianten und Anpassungen

Feel free to customize the topping by mixing poppy seeds or sesame seeds with the onions for extra texture and flavor. While barley malt syrup is traditional for the boiling liquid to achieve an authentic taste, honey is a suitable alternative that still provides a beautiful golden-brown finish to your bagels.

Serviervorschläge

These bagels are fantastic when toasted and served with a thick spread of cream cheese. They also make a wonderful base for a classic breakfast sandwich with eggs and avocado, or a more sophisticated lunch with smoked salmon, capers, and fresh dill. Always allow them to cool slightly to let the crumb set before slicing.

Tangy sourdough base meets sweet caramelized onions in these golden-brown bagels, ideal for brunch or lunch.  Save
Tangy sourdough base meets sweet caramelized onions in these golden-brown bagels, ideal for brunch or lunch. | sugarprairie.com

With a bit of patience and high-quality ingredients, these homemade sourdough onion bagels will surely become a staple in your kitchen. They provide an artisan touch to any meal, and the satisfaction of baking from scratch is unbeatable. Enjoy the savory crunch and chewy texture of your fresh creation!

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Kitchen Help

What causes the chewy texture in these bagels?

The chewy texture comes from using bread flour combined with a proper kneading and an overnight fermentation, allowing gluten to develop and flavor to deepen.

Why are the bagels boiled before baking?

Boiling bagels briefly helps form their signature crust and gives them a dense, chewy interior by gelatinizing the dough’s starch before baking.

How do the sautéed onions affect the flavor?

Sautéed onions add a sweet, caramelized layer that complements the tangy sourdough base, enhancing the overall taste experience.

Can I substitute barley malt syrup used during boiling?

Honey is a suitable alternative to barley malt syrup, providing similar sweetness and aiding crust development during boiling.

What is the role of the overnight fermentation?

Overnight fermentation enhances flavor complexity and texture by allowing the sourdough starter to develop acidity and improve gluten structure.

Sourdough Onion Bagels

Chewy sourdough bagels topped with golden sautéed onions, perfect for morning or midday meals.

Setup duration
25 min
Heat duration
25 min
Complete duration
50 min
Created by Molly Evans

Classification Comfort Cravings

Complexity Medium

Heritage American, Jewish

Output 8 Portions

Nutrition guidelines Meat-free

Components

Sourdough Starter

01 3.5 oz active sourdough starter at 100% hydration

Dough

01 14.1 oz bread flour
02 1.8 oz whole wheat flour
03 0.35 oz sea salt
04 0.9 oz granulated sugar
05 8.1 fl oz lukewarm water

Onion Topping

01 1 large yellow onion, finely chopped
02 1 tablespoon olive oil or unsalted butter
03 0.25 teaspoon sea salt

Boiling

01 67.6 fl oz water
02 1 tablespoon barley malt syrup or honey
03 1 teaspoon baking soda

Method steps

Phase 01

Prepare the Onions: Heat olive oil or butter in a skillet over medium heat. Add chopped onions with sea salt and sauté for 8-10 minutes until soft and golden. Transfer to a plate and allow to cool completely.

Phase 02

Combine Dough Ingredients: In a large mixing bowl, combine sourdough starter, bread flour, whole wheat flour, sea salt, granulated sugar, and lukewarm water until a shaggy dough forms.

Phase 03

Knead and Rest: Knead the dough for 8-10 minutes until smooth and elastic. Cover the bowl and let rest at room temperature for 4 hours, performing two stretch-and-fold turns during the first 2 hours at 30-minute intervals.

Phase 04

Bulk Fermentation: Cover the dough and refrigerate for 8-12 hours overnight to develop flavor and structure.

Phase 05

Shape Bagels: Divide the dough into 8 equal pieces. Shape each piece into a ball, then poke a hole in the center and stretch gently to form a bagel shape with approximately 2-inch diameter hole.

Phase 06

Final Proof: Place shaped bagels on a parchment-lined baking sheet, cover loosely, and let rise for 1-2 hours at room temperature until slightly puffy.

Phase 07

Boil Bagels: Preheat oven to 425°F. Bring water, barley malt syrup or honey, and baking soda to a rolling boil in a large pot. Working in batches, boil bagels 1-2 at a time for 1 minute per side. Remove with a slotted spoon and return to the baking sheet.

Phase 08

Top and Bake: While bagels are still damp, press sautéed onions onto the tops of each bagel. Bake for 20-25 minutes until golden brown and fully cooked through.

Phase 09

Cool: Transfer baked bagels to a wire rack and allow to cool completely before slicing and serving.

Kitchen tools needed

  • Large mixing bowl
  • Skillet
  • Slotted spoon
  • Baking sheet
  • Parchment paper
  • Wire cooling rack

Dietary concerns

Review ingredients carefully for potential allergens and seek professional medical guidance if uncertain.
  • Contains gluten from wheat flour
  • May contain trace sesame if used as optional topping
  • Contains onions

Dietary breakdown (per portion)

Values shown are estimates only - consult healthcare providers for specific advice.
  • Energy: 250
  • Fats: 3 g
  • Carbohydrates: 50 g
  • Proteins: 7 g