Melt the margarine or butter and ice cream and add sugar. Boil for 1 minute. Pour mixture over rolls. Put pan in the cold oven over night.
In the morning, turn oven on to 350`for 25-30 minutes. (turn the oven on with the cinnamon rolls in the oven...do not remove while it is heating up) Spread the icing that came with the rolls all over the cinnamon rolls when they are done cooking and serve.