Spread a large piece of parchment paper onto a countertop or
table. Lightly butter the parchment paper or spray it with non-stick
baking spray.
Melt the butter in a heavy saucepan over medium-high heat. Add
the sugar and stir until the butter is melted and the sugar is
disolved.
Add the water and the corn syrup. Continue to cook the mixture
over medium-high heat and stir it occasionally until a candy thermometer
registers the “soft-crack” stage, 260º-270º, about 25-30
minutes.
At this stage, begin to constantly stir the sugar mixture as
it cooks and until it reaches “hard-crack” stage at 290º,
about 10 more minutes. The sugar mixture will reach 290º
very quickly. Immediately remove the pan from the heat so that
the sugar mixture does not burn.
Stir in the ½ cup of coarsely chopped almonds.
Immediately spread the hot sugar and almond mixture onto the
parchment paper using a metal spatula. The candy should be about
1/8” thick.
Melt the chocolate in the top of a double boiler, or in a pan
placed over gently simmering hot water.
Once the chocolate is melted, pour it on top of the candy. Spread
the chocolate on top of the candy in a smooth, thin layer. Immediately
sprinkle the hot chocolate with the remaining 1 cup of finely
chopped almonds.
Gently press the chopped almonds into the chocolate with your
fingers.