Overnight Buttermilk Soft and Fluffy Cinnamon Rolls with Cream Cheese Frosting

Dough

up to 4 1/4 cups all-purpose flour, divided

granulated sugar

instant dry yeast (one 1/4-ounce packet, I use Red Star Platinum)

salt, optional and to taste

unsalted butter, melted (3/4 of one stick)

large eggs, lightly whisked

buttermilk

Filling

unsalted butter (1 stick), very soft – let it sit out while dough rises

to 1 1/4 cups light brown sugar, packed

about 3 teaspoons cinnamon (I used almost 5 teaspoons)

Cream Cheese Frosting – batch may be halved

unsalted butter, softened

cream cheese, softened

vanilla extract

confectioners’ sugar (4 cups)