Mix lemon zest with sugar. Set aside.
Spray a deep dish pie pan with non-stick spray. You can use a 9 x 13 baking pan as well. Place the frozen rolls in the pan, with a bit of space between each. Allow to thaw out for a couple of hours.
When they are thawed out, but still cold, cut rolls in half and place back in pan.
Drizzle 1/4 cup melted butter over rolls.
Sprinkle with lemon zest/sugar mixture, reserving 1/2 of mixture to sprinkle on just before baking. Cover with sprayed plastic wrap. Let rise until double in size.
Remove wrap. Sprinkle on remaining mixture.
Bake at 350 degrees for 20-25 minutes. Remove immediately from pan and place on cooling rack.Let cool for about 10 minutes before adding the glaze.
Combine glaze ingredients and mix well. Drizzle over pull-aparts.
