One 12 x 18-inch pan, buttered and lined with buttered foil, plus 2 large cutting boards, jellyroll pans, or cardboard pieces, covered with parchment.
To make the butter crunch mixture, melt the butter in a saucepan. Remove from heat and stir in sugar, corn syrup, and water. Cook, stirring occasionally, until the mixture reaches 300 degrees on a candy thermometer. Remove from heat, stir in almonds, and pour out into prepared pan, spreading the mixture with the back of a spoon to fill the pan.
Before the butter crunch hardens, but when it is firm enough to handle, turn it out onto a large parchment-covered cutting board and peel away the foil. Allow the butter crunch to cool completely.
To finish the butter crunch, wipe the top surface of the candy with a damp paper towel to remove excess butter and allow drying a few minutes. Have another cutting board or the back of a jellyroll pan ready to turn the candy over onto. Use a small offset metal icing spatula to spread half the tempered chocolate quickly over the butter crunch. Scatter half the chopped almonds over the chocolate. Cover this finished surface with a piece of parchment paper or foil and place another cutting board or the back of a large jellyroll pan.
Remove top board and paper and quickly spread with remaining tempered chocolate and scatter on remaining almonds.
Servings: