Sweet Potato Cake

Cake:
Butter-flavored cooking spray
1 reduced-fat yellow cake mix
1 (3.4-ounce) package vanilla instant pudding mix
4 Large eggs
2 tsp. Cinnamon
1/2 tsp. Nutmeg
2 tsp. Vanilla
1 tsp. Butter flavoring
1 (15-ounce) can sweet potatoes, drained and mashed
1 C. Crushed pineapple, packed in juice, well-drained

Preheat oven to 350 degrees. Lightly spray 9-inch-by-13-inch baking pan with cooking spray. Set aside. Cake: Combine cake mix, pudding mix, egg white, 2/3 cup water, oil, cinnamon, nutmeg, vanilla and butter flavoring in a large mixing bowl. Mix with electric mixer for 3 to 5 minutes or until batter is smooth. Add sweet potatoes and pineapples, and continue to mix until sweet potatoes and pineapple are well-combined. Pour mixture into prepared pan and bake for 30 to 35 minutes or until cake test done.
Allow cake to cool before frosting.
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