Chelsea buns are spiral-shaped rolls made from a soft, enriched dough wrapped around a filling of brown sugar, currants, and warm spice, then glazed after baking. They've been a staple of British baking since the 18th century and take around two hours to make, including the time needed for the dough to rise.
Start by dissolving the active dry yeast in warm milk. Let it sit for about 5-10 minutes until frothy.
In a large mixing bowl, combine the all-purpose flour, granulated sugar, and salt. Make a well in the center and add the frothy yeast mixture, egg, and softened butter. Mix until a soft, slightly sticky dough forms.
Knead the dough on a floured surface for about 10 minutes until smooth and elastic. If you prefer, use a stand mixer with a dough hook.
Place the dough in a greased bowl, cover with a cloth, and let it rise in a warm spot for 1-1.5 hours until doubled in size.
For the filling, combine the light brown sugar, melted butter, currants, and cinnamon in a small bowl.
After the dough has risen, roll it out on a floured surface to a rectangle approximately 40x30cm (16x12 inches).
Spread the filling mixture evenly over the dough, leaving a border along one long edge. Roll up the dough tightly from the opposite long side.
Cut the roll into 8 equal pieces. Place them cut-side up in a greased baking dish. Cover and let rise for another 30 minutes as you preheat your oven to 180°C (350°F).
Brush the tops of the buns with milk and bake in the preheated oven for about 20-25 minutes until golden brown.
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Notes
For a twist, try adding chopped nuts or a touch of orange zest to the filling. You can also substitute raisins for currants if desired. Using a thermometer for the milk ensures proper yeast activation.