Sourdough Onion Pretzel Bites (Printable Version)

Soft pretzel bites infused with sourdough and caramelized onions, ideal for sharing or solo snacking.

# What You'll 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

# Steps:

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 bowl and allow 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 the cooled caramelized onions to the dough. Knead by hand or with a dough hook for 7 to 10 minutes until the dough becomes smooth and elastic.
04 - Place dough in a lightly greased bowl, cover with a cloth, and let rise in a warm location for approximately 2 hours or until doubled in volume.
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 portions. Roll each portion into a 12-inch rope, then cut each rope into 1-inch pieces.
07 - Bring 6 cups of water to a boil in a large pot. Carefully add baking soda, which will bubble vigorously. Working in batches, drop pretzel bites into the boiling water for 30 seconds. Remove with a slotted spoon and arrange on prepared baking sheets.
08 - Brush each pretzel bite with beaten egg and sprinkle generously with flaky sea salt. Add optional toppings such as minced chives or dried onion flakes if desired.
09 - Bake for 12 to 15 minutes until pretzel bites achieve a deep golden brown color.
10 - Remove from oven and allow to cool slightly before serving warm.

# Expert Advice:

01 -
  • They taste like you spent hours in a German bakery, but your sourdough starter does most of the heavy lifting.
  • Caramelized onions make them feel fancy enough to serve guests, yet casual enough to eat standing at the counter.
  • The baking soda bath creates that authentic chewy crust that snaps when you bite down.
02 -
  • Don't skip the baking soda bath—it's not just for show; it's what transforms regular bread into a chewy, authentic pretzel with that distinctive dark crust.
  • Caramelized onions take time, and rushing them on high heat just makes them bitter instead of sweet; medium heat and patience are non-negotiable.
  • If your sourdough starter is sluggish or very young, these might not rise as much as you'd expect—a mature, bubbly starter makes all the difference.
03 -
  • Save some of your caramelized onion liquid to brush onto the dough before topping—it adds extra flavor and helps the salt stick beautifully.
  • If your dough rises too fast and doubles before you're ready, punch it down gently and it will rise again; this actually develops more flavor.
  • Test your baking soda bath temperature with one pretzel bite first—you want a gentle boil, not a violent one, so they cook through without falling apart.
Return