First, prepare a square pan with baking paper and baking spray.
Now in glass bowl 1, heat chocolate chips and 1 can condensed milk in the microwave for 90 seconds, stirring every 30 seconds until melted and smooth.
Pour this mixture into the prepared square pan and use a greased spatula to spread evenly.
In the second glass bowl, heat the peanut butter and half a can of condensed milk in the microwave for about one minute, stirring halfway through until melted and smooth. If too thick, stir in an extra tablespoon of condensed milk until smooth.
Pour peanut butter mixture over the chocolate layer of fudge and used the greased spatula to spread evenly.
In a small ziplock bag or a mortar & Pestle, crush your macadamia nuts and Himalayan salt and sprinkle over fudge.
Then refrigerate at least 2 hours or until set.
Cut into small squares and store in a sealed container.