Creamsicle Cake - Jello Cake

INGREDIENTS

• 1 (18 ounce) box orange cake mix
• 3 eggs (or as called for by your cake mix)
• 1/3 cup oil (or as called for by your cake mix)
• 1 1/4 cups water (or as called for by your cake mix)
• 2 (3 ounce) packages orange flavor gelatin
• 1 (3 1/2 ounce) package vanilla instant pudding mix
• 1 cup milk
• 1 teaspoon vanilla
• 1 (8 ounce) container thawed Cool Whip