Combine hot water, sugar, powdered milk, and yeast in very large bowl. Allow yeast to activate. Add eggs and 7 cups of flour. Stir or beat until thoroughly mixed; dough will resemble cake batter. Let rest until bubbly or it raises to top of the bowl (10-15 minutes). Add salt, oil, and remaining flour. Knead for 10-12 minutes. Dough should be a little sticky, but manageable.
To prevent from sticking spread Butter-Flavored Crisco on the counter (I have used butter and regular Crisco as well) Do not use flour in place of the Crisco. More flour will make the cinnamon rolls too heavy. Roll out dough on the counter in a rectangle about ½ inch thick, 14 inches wide and 30 inches long. Spread with one cube (1/2 cup) butter, 1 cup sugar mixed with 3 tablespoons cinnamon, and 1-2 cups brown sugar crumbled. Carefully roll up into long roll trying not to stretch the dough. Cut the rolls about ¾ thick with a sharp knife, using a gentle sawing motion ( I use a piece of dental floss to cut the rolls ). Place on a greased cookie sheet (bakers half sheet) one dozen per sheet. (Lorna bakes them on parchment paper sprayed with Pam. I bake them straight on the cookie sheet sprayed with Pam and no parchment, and they come out great.) The recipe fills 3 large cookie sheets (3 dozen rolls). Let them raise until they are touching on all sides. Bake at 375 degrees until golden brown on top. Approximately 15-18 minutes. (My oven takes 20-22 minutes.) Test doneness by gently pressing down on center of a roll. If it springs back without sinking, they are done.