Line two 10 1/2 x 15 1/2 in. jelly roll pans with Non-Stick Parchment Paper and spray with Wilton Bake Easy Non-Stick Spray. Divide Jelly Roll Sponge Cake batter between the 2 pans; batter will be thin. Bake following instructions; immediately remove cake from pan, peel off parchment paper and roll tightly lengthwise in clean towel. Rolled cake should measure 15 1/2 in. long x 1 ½ in. diameter; let cool.