Grease a 10×15 baking dish.
Once your dough has risen, sprinkle a pastry mat or your clean counter with flour. Turn out the dough on to the mat and roll the dough in to a rectangle, (about 12×16.)
Spread the cinnamon/sugar butter filling all over the rectangle to about 1/2 inch from the edge. (The spread is thick so you will need to put dots of the filling all over the dough and then gently spread it together. It will take a couple of minutes but is worth it because the filling will stay in the roll and not leak out everywhere!)
Once your filling is spread evenly, roll up the dough tightly but gently along the longer edge.
Cut into 12 slices and place the rolls in your greased 10×15 baking dish.
Cover the dish in saran wrap, drape a clean towel over the pan and let rise an additional 20 minutes.
Preheat the oven to 375 degrees.
Warm the heavy cream, (about 30 seconds on high in the microwave), and pour it gently over the top of the cinnamon rolls.
Let sit another 5 minutes so the cream has a chance to start soaking in to the rolls.
Bake at 375 for 22-25 minutes. (The rolls should be golden brown.)
While the rolls are baking make your frosting.