As with all sourdough recipes, feed the sourdough starter and place it in a warm place several hours before you are ready to bake. An active starter should be doubled and have large air bubbles when it is at peak activity.
300 grams sourdough starter, 630 grams All-purpose flour, 42 grams powdered milk, 50 grams honey, 15 grams salt, 340 grams water, 4 tablespoons butter
In the bowl of a stand mixer fitted with the dough hook attachment, mix together all of the dough ingredients. This will make a smooth, supple, and not overly sticky dough. Start with a low speed, then gradually increase to a kneading speed for two minutes.The dough should cling to the hook and be free from sticking to the sides of the bowl. This takes about 8-10 minutes. Place the kneaded dough in an airtight container with lid or cover with plastic wrap. Bulk ferment for 4-6 hours at room temperature.
Once bulk fermentation is over, grease and flour one 9X13 baking dish, a 11X15 ½ sheet pan or two 8" round pie pans. Use a rolling pin to spread the dough on a lightly greased work surface until it is approximately a large 14×8-inch (36×20-cm) rectangle.
Melt the butter in a medium bowl. Into the bowl, add the brown sugar, sugar, and cinnamon. Give it a good mix and then use your finger to sprinkle the crumbly cinnamon sugar mixture all over the dough.
1 cup brown sugar, 1 cup sugar, ½ cup butter, 1½ teaspoon cinnamon
Shape the rolls by rolling the dough to make a 14-inch log. Cut into 12 even rolls using a sharp knife, bench scraper or dental floss and arrange in the prepared pan. You can also make smaller rolls if you want! Just decrease the baking time accordingly.Cover the unbaked rolls with aluminum foil, plastic wrap and put the cinnamon rolls in the refrigerator overnight for 8-12 hours or even longer! The next day, take the rolls out the the refrigerator 2 ½ hours before serving.
Place the cinnamon rolls in a warm spot to let the dough rest and preheat the oven to 375 degrees Fahrenheit. For best results, move the rack to a low position so that the rolls can be baked to golden brown.
Bake at 375F for 45-50 minutes, until the center temperature of the rolls reach 195F. If the rolls are over browning, cover with foil.
In the bowl of a stand mixer, combine softened butter, room temperature cream cheese, powdered sugar and vanilla. Whisk over medium speed until light and fluffy. I like to frost my cinnamon rolls while they are still warm. Mix the frosting and spread it over the warm fluffy sourdough cinnamon rolls.
½ cup butter, 8 ounces cream cheese, 3 cups powdered sugar, 1 teaspoon vanilla extract