Mix Dough: In the bowl of a stand mixer, combine active sourdough starter, flour, honey, water, eggs, and melted coconut oil. Mix on low/medium until smooth, glossy, and the dough passes the windowpane test (stretches without tearing).
Overnight Ferment: Place the dough in a greased bowl. Cover with beeswax wrap, foil, or plastic wrap. Allow to rest in a warm place overnight, or up to 12 hours.
Add Leavening: The next day, preheat oven to 375°F (190°C). Add the baking soda, baking powder, and salt to the fermented dough. Mix in the stand mixer on medium speed for about 5 minutes until fully incorporated.
Roll: Lightly dust the counter with flour. Roll the dough out into a rectangle about 1/4 inch thick.
Fill: In a small bowl, mix the softened butter, brown sugar, and cinnamon. Spread this mixture evenly over the top of the dough.
Shape: Roll the dough up tightly from the long edge. Pinch the seam to seal. Slice into 12 even rolls.
Bake: Place rolls into a well-seasoned 14" cast iron skillet (or 9x13 baking dish). Bake at 375°F for 20-25 minutes until lightly browned and cooked through.
Make Glaze: While rolls cool slightly, add cream cheese, heavy cream, maple syrup (or honey), and vanilla to a medium saucepan. Heat over medium, stirring constantly until combined and smooth. (Use an immersion blender for extra smoothness).
Serve: Pour the warm glaze over the rolls and serve immediately.