1 (18 1/2 oz.) pkg. devil's food cake mix
3 eggs
1 c. water
1/2 c. Hellmann's real mayonnaise

In a large bowl, with mixer at low speed, beat together cake mix, eggs, water and mayonnaise until blended. With mixer at medium speed, beat 2 minutes.

Pour into 2 greased and floured 9-inch round cake pans. Bake in a 350 degree oven for 30 to 35 minutes or until cake tester inserted in center comes out clean. Cool in pans 10 minutes. Remove from pans, and cool on wire racks. Frost as desired.