Combine powdered sugar, butter and rind. Beat until smooth. Stir in nuts.
Spray counter lightly with non-stick cooking spray and roll dough into a 14-inch square. Spread filling over half of the dough. Fold dough over filling. Cut into twelve equal strips.
Twist each strip 4-5 times. Use a finger to anchor the folded end on sprayed baking sheet. Coil strip around and tuck ends under. Repeat with remaining strips.
Cover with sprayed plastic wrap and let rise until double (35-45 min). Mix glaze ingredients and set aside.
Remove wrap. Bake twirls at 350°F 12 minutes. Remove from oven and brush with glaze. Continue baking for 3-5 minutes until golden brown.
Cool on a wire rack. Mix icing to desired consistency and drizzle over cooled twirls.