PREPARE French Toast Sticks according to package directions. Set aside four French Toast Sticks and cut remaining sticks into bite-sized pieces.
MIX pistachio pudding mix and milk until smooth. Add vanilla, mint extract, whipped topping, and green food coloring.
LAYER French Toast Stick pieces with pudding mixture, filling four glasses, making sure that mixture is on top when finished. Place one French Toast Stick standing in top of each glass. Serve with whipped topping, if desired.