HEAT oven to 350°F. Spray two 9-inch round cake pans with flour no-stick cooking spray.
COMBINE cake mix with remaining cake ingredients in bowl of electric mixer; blend on low speed 1 minute; scrape sides of the bowl. Increase speed to medium; beat 2 minutes, scraping sides down as needed. Divide between prepared pans.
BAKE 30 to 35 minutes or until toothpick inserted in center comes out clean. Cool on wire racks 10 minutes. Remove from pans; cool completely.
WHIP cream until peaks form; set aside. Place cream cheese and shortening in bowl of electric mixer; blend on low speed until combined.
ADD powdered sugar, 1/4 C. at a time; blend on low speed until well incorporated, about 1 minute. Add banana extract, if desired; blend on medium speed until fluffy, about 1 minute more. Gently fold in whipped cream. Use immediately to frost cake.
PLACE 1 cake layer, top side down, on serving plate. Spread with frosting. Top with second layer, top side up. Frost sides and top of cake with remaining frosting.
(1 slice, 1/12 of cake)
Calories from Fat330g
Total Fat 38g
Saturated Fat 12g
Polyunsaturated Fat 0g
Monounsaturated Fat 0g
Total Carbohydrates 61g
Dietary Fiber 2g
Vitamin A 0%
Vitamin C 0%
Vitamin D 0%
*Percent Daily Values are based on a 2,000 calorie diet