Preheat oven to 450 degrees. Measure the first 4 Dough indgredients into a med. bowl and mix. Cut in 1/2 cup butter with a pastry fork until it looks like coarse crumbs. Beat together egg and milk and stir into dry mixture. Stir until dough clings together and then beat for 1 minute by hand.
On a floured surface pat dough into a 8x15 inch rectangle. Brush dough with melted butter and sprinkle on the brown sugar and cinnamon. Fold dough in half lengthwise, making a 4x15 inch rectangle. Using a pizza cutter cut into 1 inch strips. Twist strips 2-3 times then place on a lightly greased 12x15 inch baking sheet. Bake in oven for 10-12 minutes.
Combine powdered sugar with milk and vanilla and stir until smooth. Brush as a glaze on top of warm twists; serve twists warm.
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