Tunnel Of Fudge Cake
["1 1/2 c. butter, softened", "6 eggs", "1 1/2 c. sugar", "2 c. Pillsbury's Best all-purpose flour", "1 regular size pkg. Pillsbury buttercream Double Dutch Fudge Frosting mix", "2 c. chopped walnuts"]
["In large mixer bowl, cream butter at high speed.", "Add eggs, one at a time, beating well after each.", "Gradually add sugar. Continue creaming at high speed until light and fluffy.", "No need to sift flour; measure by lightly spooning into cup and leveling off.", "By hand, stir in flour, dry frosting mix and walnuts until well blended."]
["butter", "eggs", "sugar", "flour", "regular", "walnuts"]