Since there are so many variables (How much dough you have leftover, how sweet you like your cinnamon rolls, etc) there's really not a recipe, per se. But here's the quick instructions how I typically make cinnamon rolls with leftover biscuit dough. #TexasHomesteader
Sprinkle leftover biscuit dough with a couple of tablespoons of sugar and cinnamon to sweeten. Then roll dough approximately 1/2" thick. Spread softened butter evenly across the surface of the dough. Sprinkle liberally with cinnamon & sugar.
Place a small pat of butter on top of each cinnamon roll and sprinkle with more cinnamon & sugar. Place baking dish place into oven. Bake alongside your biscuits (mine bake in about 15 minutes at 450℉)
OPTIONAL: Top with frosting made of a cup of powdered sugar, a few drops of milk and a few drops of vanilla extract & stir until blended but thick enough to spread.