1 pkg. Duncan Hines moist deluxe devil's food cake mix
1/2 c. butter
1/4 c. plus 2 tbsp. milk
1/4 c. unsweetened cocoa
1 lb. confectioners' sugar (3 1/2 to 4 c.)
1 tsp. vanilla extract
3/4 c. chopped pecans

Preheat oven to 350 degrees. Grease 15 1/2 x 10 1/2 x 1 inch pan. Prepare cake following package directions. Pour batter into pan. Bake at 350 degrees for 20 to 25 minutes or until toothpick inserted in center comes out clean.

For Frosting: Combine butter, milk, and cocoa in medium saucepan. Stir over low heat until butter is melted. Add confectioners' sugar and vanilla extract, stirring until smooth. Stir in pecans. Pour over warm cake. Cool completely.

Tip: For best results, allow the cake to cool undisturbed until frosting is set, about 4 hours.