Maple Vanilla Swirl Fudge
["2 (11 oz.) pkg. premium white chocolate pieces", "1/3 c. half and half", "1/2 tsp. maple extract", "1 c. chopped toasted walnuts"]
["Line a 10 x 7-inch baking pan with foil.", "Coat the foil lightly with nonstick vegetable oil cooking spray.", "Melt the chocolate pieces in the top of a double boiler over hot, not boiling, water.", "Stir the chocolate constantly until melted.", "Add the half and half; stir the mixture until it is smooth and glossy. The mixture may look separated at first, but will become smooth and glossy as you stir.", "Stir together 1 generous cup of melted chocolate with maple extract and nuts.", "Alternately spoon white chocolate and maple mixtures in prepared pan; swirl together with knife.", "Refrigerate until set, 2 to 4 hours.", "Cut into 24 squares. Refrigerate up to 1 month."]
["maple", "walnuts"]