1/2 c. butter
1/4 c. cocoa (Dutch process)
4 c. powdered sugar
1 tsp vanilla
1/2 c. low-fat evaporated milk (not condensed)
1 c. walnut, pecan or hazelnut pieces
Line square 8x8 pan with foil.
In medium micro-proof bowl, microwave butter on high until melted (1-2 minutes in mine). Add cocoa & stir with wooden spoon until smooth. Stir in powdered sugar & vanilla; blend well. Mixture will be very dry & crumbly.
Stir in evaporated milk. Microwave on high for 1 minute. Stir well. Microwave an additional minute, or until mixture is very hot.
Beat with wooden spoon until very smooth. Add nuts, stir to combine. Pour into prepared pan, smooth evenly. Cover; chill until firm. Lift foil from pan, separate edges of foil from fudge. Cut into squares.
Store in refrigerator in tightly covered container.