I have made this a lot and always get asked to bring it for get-togethers. It requires a 15-1/2x10-1/2x1-inch pan. It is well worth the investment and the cake does not turn out in other size pans

1	pkg	Duncan Hines Moist Deluxe Devil's Food cake mix
1/2	cup	butter or margarine
1/4	cup
PLUS
1	tbsp	milk
1/4	cup	unsweetened cocoa
1	lb	powdered sugar
1	tsp	vanilla extract
3/4	cup	pecans, chopped

• Preheat oven to 350° F. Grease sheet pan. Prepare cake following package directions. Pour batter into pan. Bake for 20 to 25 minutes.
• For frosting, combine butter, milk and cocoa in medium sauce pan. Stir over low heat until butter is melted. Add powdered sugar and vanilla extract, stirring until smooth. Stir in pecans. Pour over warm cake (let cake cool for about 20 to 25 minutes.) Cool completely.
• TIP: For best results, allow the frosted cake to cool undisturbed for about 3 to 4 hours.