Ingredients
Method
Dough
- Combine starter, brown sugar, and warm milk in the mixer bowl. Keep milk below 120°F to protect the starter.
- Mix on low until blended.
- Add melted butter, salt, and the room-temperature egg. Mix on low until combined.
- Swap to the dough hook. Add flour in three or four additions. Mix on medium and scrape the bowl between additions. Dough should pull away from the bowl and feel tacky, not sticky.
- Knead for 5 more minutes on medium speed.
First Rise
- Cover the bowl and let the dough double in a warm spot. At 70°F, this takes about 6–7 hours.
Shape and Fill
- Turn the dough onto a lightly floured surface. Roll to a 16" × 12" rectangle.
- Spread softened butter evenly over the dough.
- Mix brown sugar with cinnamon. Sprinkle the mixture evenly.
- Roll from the long side into a tight log. Trim the ends. Slice into 9 equal pieces with dental floss or a sharp knife.
- Arrange rolls, spaced 1/2–1" apart, in a greased baking dish.
Second Rise
- Cover with a damp towel and proof until puffy. At 70°F, this takes about 3–4 hours.
Bake
- Preheat oven to 350°F. Just before baking, pour warmed heavy cream over the rolls.
- Bake for 30–35 minutes, until tops are golden and the center reaches about 190°F.
- Remove and cool slightly on a wire rack.
Frosting
- Beat butter and cream cheese until smooth. Add powdered sugar and heavy cream, then mix to a spreadable consistency.
- Spread frosting over warm rolls so it melts into the swirls.
Nutrition
Notes
For best results, measure by weight. Use dental floss to slice cleaner spirals. Can keep in the fridge or freeze leftovers.
