Ingredients:
4 sticks (1 lb) butter (salted or unsalted)
 1 teaspoon kosher salt
 2 rounded cups white sugar
 1 cup semi-sweet chocolate chips
 4 Tablespoons water
 2 cups sliced almonds
 1/2 cup chopped almonds
Directions:
Grease a rimmed 12″x17″ or 13″x18″ jelly roll or sheet pan (I used nonstick cooking spray).
 Combine butter, sugar, salt, and water in a large saucepan or pot over medium heat.
 Bring to a boil, stirring gently but constantly. It will gradually change color and consistency, from thin to thick, light yellow to darker golden brown.
 Cook till it reaches a smooth, dark brown color, or till a candy thermometer reaches 298 degrees. This will probably take about 20 minutes.
 Remove from heat and add sliced almonds, stirring to combine.
 Pour onto baking sheet, spreading evenly with a silicon spatula or offset spatula.
 Immediately sprinkle chocolate chips evenly over the top of the toffee, and let sit for a few minutes to soften.
 Use a spatula to spread the chocolate evenly over the toffee.
 Sprinkle with chopped almonds.
 Once completely cooled, turn onto a large cutting board and use a knife to break it into pieces.
 Store in an airtight container.
courtesy :rachelmakesbakes.wordpress.com