-Line a large baking sheet with parchment.
-Whisk butter, sugar and vanilla in a medium saucepan over medium heat, stirring frequently
until mixture begins to boil.
-After mixture begins to boil, whisk constantly for approximately 10 minutes. Do not stop
whisking and give the mixture the chance to burn or separate! The mixture will darken in
color and become very thick.
-Spread the thickened mixture onto your prepared baking sheet. When you have spread the
mixture to an even thickness, immediately sprinkle the chocolate chips on top. Wait two or
three minutes for the chocolate to soften and then use a spatula to spread the chocolate on
top of the toffee.
-Sprinkle the chopped nuts onto the melted chocolate. Add a light sprinkle of flaked sea salt.
-Refrigerate the toffee until it hardens (about 30 to 40 minutes). Break the toffee into pieces
before serving. Store in an airtight container.