Austrian Sourdough Sweet Rolls (Buchteln) are soft, fluffy buns filled with fruity jam - apricot is the traditional choice. The dough is a classic brioche dough, making these rolls rich and tender. You can dust them with powdered sugar or enjoy them plain.
In a stand mixer bowl, combine all dough ingredients except for the butter. Mix on low speed until no dry flour remains. Gradually add the butter.
Increase the speed slightly and mix for about 20 minutes until the dough becomes smooth, elastic, and almost pulls away from the bowl.
Scrape down the sides, cover the bowl with plastic wrap or a damp tea towel, and let it rest for 30 minutes. Perform 2–3 sets of stretch and folds every 30 minutes.
Allow the dough to rise until it's about 50% bigger, typically 6–8 hours at 72°F. The dough will puff up but not double in size.
Optional Cold Proof: For better flavor, cover the dough and refrigerate overnight (no more than 12 hours).
Gently deflate the dough and divide it into 12 equal pieces (about 52g each). Roll each piece into a smooth ball and let them rest for 15 minutes.
Flatten each ball slightly and roll it into a 3–3.5 inch circle.
Place about 1 teaspoon of jam in the center of each circle, then gather the edges and pinch to seal. Avoid getting jam near the edges to ensure a proper seal. Roll into a smooth bun and keep covered while shaping the rest.
Grease a 9x13-inch baking dish with melted butter and arrange the buns inside, ensuring they are close together but not squished. Brush the tops with the remaining melted butter.
Cover and let them rise until noticeably puffy, about 3–5 hours, depending on your kitchen temperature.
Bake at 375°F (190°C) for 20–25 minutes, or until the center bun reaches 185°F (85°C). If the tops brown too quickly, tent with foil.
Let the buns cool for 5–10 minutes. Optionally dust with powdered sugar or enjoy them as is!
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Notes
Use an active, bubbly sourdough starter – This makes all the difference! If it's sluggish, the dough won’t rise as nicely.
Be patient with the rise – Sourdough can be slower than yeast, especially in cooler kitchens. The dough should look puffier and about 50% bigger before moving on.
Seal the rolls well – When filling the rolls, be sure to pinch the seams tightly so the jam doesn’t leak out while baking. Keep the jam away from the edges for a better seal, and don't use lots of flour when shaping them.