Question: how to make cinnamon rolls by scratch?
Answer: Heat oven to 350 degrees F.
In a small bowl, dissolve yeast in warm water and set aside. In a large bowl mix milk, sugar, melted butter, salt and egg. ... 
When doubled in size, punch down dough. ... 
Coat the bottom of baking pan with butter and sprinkle with sugar. ... 
Meanwhile, mix butter, powdered sugar, and vanilla.