Conference Sunday Cinnamon Rolls

Okay, so I have never made this recipe, per se, but Camille wanted me to put on a recipe for homemade cinnamon rolls. I thought since this is Conference Sunday I would oblige. These were in the most recent Mormon times. (from the family dinner cookbook, by Debbie G. Harman)

Grandma's Cinnamon Rolls
2 packages yeast
1/2 cup warm water
1 Tablespoon sugar
1 tablespoon baking powder
1 cup butter
2 cups buttermilk
4 large eggs
2/3 cup sugar
2 teaspoons salt
6-7 cups flour
1/2 cup sugar
2 teaspoons cinnamon
1/2 cup brown sugar

Dissolve yeast and the 1 tablespoon sugar in water. Melt butter in saucepan. Stir in buttermilk and eggs. Mix together in a large mixing bowl. Add sugar, salt and 4 cups flour and beat with mixer until smooth. Stir in enough flour to make a moderately stiff dough. Turn onto floured surface and knead 7-8 minutes. Place in greased bowl and let rest 15 minutes. Divide dough in half. Roll dough to 1/2 inch thickness. Sprinkle water over dough. Sprinkle with sugar, cinnamon and brown sugar. Roll dough jelly roll style. Cut 1/2-inch thick slices.
Place on greased baking pan. Let rise until double. Bake at 375 degrees for 20-25 minutes or until edges just start to turn golden. Remove from oven and spread butter cream frosting on rolls immediately.

Butter Cream Frosting:
1/4 c. butter
1/4 c. whipping cream (or milk)
2 cups powdered sugar
1 teaspoon vanilla

Beat butter until creamy. Add whipping cream, vanilla and enough powdered sugar to make a creamy frosting.