Easy Double Chocolate Fudge

I found this recipe in a Reader Digest 24 years ago and I have been making it ever since. I have giving it away as gifts at Christmas, I have even been paid to make it for Richard's co-workers.
You won't believe how rich and creamy with so little effort.

Easy Double Chocolate Fudge

2 cups (12 oz.) semi-sweet chocolate chips

1 (11 1/2 oz.) package milk chocolate chips

1 (14oz.) can condensed milk

2 tablespoons milk

2 teaspoons vanilla

1 cup chopped nuts (your choice)

In saucepan, over low heat; melt semi-sweet chocolate chips with 2/3 cups condensed milk, 1 tablespoon milk, and 1 teaspoon vanilla remove from heat; stir in 1/2 cup nuts. Spread evenly into a foil-lined 9-inch square pan. In another saucepan, over low heat; melt milk chocolate chips with remaining condensed milk, 1 tablespoon milk and 1 teaspoon vanilla. Remove from heat; stir in remaining nuts. Spread over fudge in pan. Chill 2 hours or until firm. Turn fudge onto cutting board peel off foil and cut into squares. Store at room temperature.