Ingredients
Method
Make the dough
- In a stand mixer (or large mixing bowl) Combine starter, water and milk and mix with a dough whisk or flat beater if using stand mixer. Switch to a dough hook and add all remaining ingredients and allow it to knead for 5 minutes. if using a mixing bowl, mix with dough whisk until you need to switch to your hands. Knead with your hands on the counter for 5-8 minutes add more flour if it's too sticky, it should be soft but not overly sticky. Place in a big oiled bowl, cover with plastic wrap and allow to rise overnight (8-10 hours).
- In the morning, mix up your Cinnamon sugar filling by combining the sugar and cinnamon in a small mixing bowl. Spray a 9x13 baking dish with cooking spray (or you can use butter)
- On a floured surface, roll the dough out to about 1/4 inch thickness and about 16 x 12 inch rectangle. spread the 1/4c softened butter all over leaving a small space around the edges, then sprinkle the cinnamon sugar filling over the butter and press down lightly.
- Roll the dough up into a log long ways, and cut into about 12 rolls. Place the rolls in the prepared 9x13 glass baking dish. Cover with plastic wrap or a tea towel and allow to rise for another 1-2 hours until risen and puffy.*See notes above if you run out of time or want to freeze/make ahead
- Bake at 350° for 40-45min, check for doneness and bake longer if needed.
Make the Frosting
- While they are baking, make your icing. Cream together the butter and half of the powdered sugar with 1 tbsp of milk. add the other half of powdered sugar and another small splash of milk, once its all together add in your vanilla and whip until it's fluffy.
- When the rolls come out, allow to cool for 10 minutes and then spread the icing on and enjoy!