Gather your ingredients.
Pre-heat your oven to 375 degrees.
Spray with cooking spray a 12” cast iron skillet.
In a large bowl, add your flour. Cut your butter into pats and add to your flour. Using your hands, or a pastry cutter, work the butter into the dough.
Crumbles should resemble pea size.
Add to your flour mixture, sourdough starter, milk, sugar, salt, baking powder and baking soda. Mix well.
Lightly flour a flat surface and add your dough mixture. Roll your dough to a 12 x 22inches rectangle.
Filling: Melt your butter in a small bowl. Add to your butter mixture your cinnamon and sugar. Mix.
Brush your cinnamon sugar mixture to your dough evenly, leaving space on the edges.
Roll your dough toward you long ways. Pinch the ends together.
Cut your cinnamon rolls into 12 pieces. I suggest using a sharp knife, or breadknife. Cut in the middle to create two pieces, then cut again to create fourpieces, etc. until you have 12!
Place each piece of your cinnamon roll in your skillet with the swirl showing top to bottom. Place evenly so that each cinnamon roll has room.
Bake your cinnamon rolls for 35 to 40 minutes or until lightly brown.
While your cinnamon rolls are baking, mixed together all of the ingredients for your glaze. Set aside.
Once your cinnamon rolls are done remove them from the oven. Pour the glaze evenly over the cinnamon rolls.
Serve and enjoy!