Preheat oven to 375. Mix dry ingredients well in a large bowl. Add eggs, oil and milk; stir well (if too soft, add a little more flour). Spray 20 inch long piece of wax paper with cooking spray. Scoop dough onto paper with wet or oiled hands. Spread into 10x14 rectangle. Drizzle on melted butter and sprinkle generously with cinnamon.sugar mixture. Lift long side of wax paper and dough will start to roll. Cut into 12 pieces. Bake in large muffin tins for 18 minutes, till golden brown. Sprinkle with powdered sugar while still warm.