Step 1

Butter and line an 8-inch square baking dish with parchment paper (leaving a 1-inch overhang on all sides), butter parchment.

Step 2

In a medium saucepan stir together chocolate chips, sweetened condensed milk and salt.

Step 3

Cook over low heat, stirring constantly until chocolate chips have melted.

Step 4

Remove from heat, stir in vanilla and nuts. Pour into prepared baking dish and spread into an even layer.

Step 5

Chill until set, about 2 hours. Lift from pan using parchment then cut into squares.

Step 6

In a medium microwave safe bowl stir together chocolate chips, sweetened condensed milk and salt.

Step 7

Heat in microwave on 50% power in 30 second increments, stirring well between intervals, until melted and smooth (it should take about 5 - 6 cooking periods).

Step 8

Stir in vanilla and nuts. Spread into prepared dish and chill until set, about 2 hours. Cut into squares.