In a large bowl or a stand mixer fitted with a dough hook, combine the flour, sugar, salt, and cinnamon. Mix in the yeast with water, butter, and egg until a smooth dough comes together. If it is too crumbly, add a little more water. It it is too loose and sticky, add a little more flour. Cover and allow to rest at room temperature for 30-60 minutes. It will get puffy, but won't double in size.