Melt the butter and coconut oil , I did this over low heat so that the butter did not brown.Add Gentle Sweet salt and peppermint extract, whisk to combine.
I used my immersion blender to blend the whey protein powder into this mixture and then poured it into a large parchment lined baking sheet.
Place in freezer to harden.
Break Toffee into bite size pieces and store in the freezer.