Step 1
Line a 9-inch cake pan with enough aluminum foil to have it hanging over the sides; spray with non-stick cooking spray and set aside.
Step 2
Stir sugar water and gelatin together in a large pot; bring to a boil reduce heat to medium and cook at a simmer stirring constantly for 20 minutes.
Step 3
Stir rose water and food coloring into the mixture in the pot; pour directly into the prepared cake pan.
Step 4
Cover pan with plastic wrap and refrigerate 8 hours to overnight.
Step 5
Lightly dust a cutting board with some of the confectioners' sugar. Invert cake pan onto the cutting board. Gently peel aluminum foil from the surface of the gelatin. Cut gelatin into squares.
Step 6
Spread confectioners' sugar into a wide shallow dish. Roll gelatin squares in the sugar to coat.