Sourdough Onion Pretzel Bites (Printable)

Soft pretzel bites combining tangy sourdough and sweet caramelized onions for great flavor and texture.

# What You Need:

→ Dough

01 - 1 cup active sourdough starter at 100% hydration
02 - 2½ cups bread flour
03 - ⅔ cup warm water
04 - 2 tablespoons unsalted butter, melted
05 - 1 tablespoon granulated sugar
06 - 1 teaspoon fine sea salt

→ Onion Mixture

07 - 1 medium yellow onion, finely diced
08 - 1 tablespoon olive oil
09 - ½ teaspoon salt

→ Baking Soda Bath

10 - 6 cups water
11 - ¼ cup baking soda

→ Topping

12 - 1 egg, beaten for egg wash
13 - Flaky sea salt for sprinkling
14 - Minced chives or dried onion flakes, optional

# Directions:

01 - Heat olive oil in a skillet over medium heat. Add diced onion and salt, stirring occasionally until golden and caramelized, approximately 12 to 15 minutes. Transfer to a plate to cool completely.
02 - In a large mixing bowl, combine sourdough starter, bread flour, warm water, melted butter, sugar, and salt. Mix until a shaggy dough forms.
03 - Add cooled caramelized onions to the dough. Knead by hand or with a dough hook for 7 to 10 minutes until smooth and elastic.
04 - Place dough in a lightly greased bowl, cover, and let rise in a warm place for approximately 2 hours until doubled in size.
05 - Preheat oven to 425°F. Line two baking sheets with parchment paper.
06 - Turn dough onto a floured surface and divide into 4 equal pieces. Roll each piece into a 12-inch rope, then cut each rope into 1-inch pieces.
07 - Bring 6 cups water to a boil in a large pot. Carefully add baking soda and allow to bubble. Working in batches, drop pretzel bites into boiling water for 30 seconds. Remove with a slotted spoon and arrange on prepared baking sheets.
08 - Brush each bite with beaten egg and sprinkle with flaky sea salt. Add optional chives or onion flakes if desired.
09 - Bake for 12 to 15 minutes until deep golden brown.
10 - Allow to cool slightly before serving warm.

# Expert Hints:

01 -
  • They're soft inside with just enough chew, nothing like those dense, tough pretzel bites you buy at the airport.
  • The caramelized onions taste rich and almost sweet, so one bite actually feels indulgent without being heavy.
  • Your kitchen will smell incredible while they're baking, and they disappear in minutes at any gathering.
02 -
  • Don't skip the baking soda bath or try to substitute it with just brushing the dough—that bath is what transforms them from bread rolls into proper pretzels with that chewy, brown exterior.
  • The caramelization step is not negotiable; undercooked onions will taste raw and sharp instead of sweet and deep, and they won't distribute flavor evenly through the bites.
  • If your sourdough starter isn't actively bubbling and buoyant, feed it and wait a few hours before starting—a sluggish starter will result in flat, dense bites instead of light ones.
03 -
  • If your kitchen is cold, create a warm spot for rising by turning your oven on low for a minute, then turning it off—place the covered dough inside for a gentle, consistent warmth that speeds up fermentation.
  • Don't skip tasting the cooled caramelized onions before adding them to the dough; they should taste almost sweet, and if they taste sharp or raw, they need more time in the pan.
  • For even browning in the oven, rotate your baking sheets halfway through baking, because most ovens have hot spots that brown one side faster than the other.
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