I made this for my team at work. I put it in a big glass jars and passed them around with the morning coffee. The third fellow who took a piece out of the jar poked his head out in the hallway as I was leaving and said, quite loudly, "Will you Marry Me??"
That would be a "no" but you can have more toffee.
It takes some patience and the hints will really help it turn out, but it's worth the trouble for special friends.
Dark Chocolate Toffee
2 cups butter (use the best quality butter you can buy, it's a key ingredient)
2 cups white sugar
1/4 teaspoon salt
drop of Penzey's Mexican Vanilla
2 cups semisweet chocolate chips (I used Ghirardelli 60% Cacao Bittersweet Chocolate Chips. With distinct smoke, wine and fruit flavors, this is not your childhood chocolate chip. Low sugar allowed the chocolate flavor to really shine and the shape makes for easy melting.)
1 cup finely chopped almonds and pecans, mixed
Instructions: (Basic instructions in BOLD, helpful hints in regular type).
Before you do anything, test your candy thermometer. It should be 212 degrees F. in boiling water with the thermometer about 1/2 inch off the bottom of the pan (don't let it touch). If off by much, get a new thermometer and make the recipe another day
Allow to come to a steady but not rolling boil, and cook until the mixture becomes a dark amber color, and the temperature has reached 285 degrees F, (137 degrees C), stirring occasionally (it should not burn on medium). This takes about 20 minutes.
You are aiming for a final temperature of 285 to 295. The higher the temp the more brittle the toffee will be. 285 is the "soft crack" stage where the toffee may be somewhat soft and pliable after cooling. If it seems to be rising faster than that, turn the heat down a tiny bit. If slower, do NOT increase the temperature, just cook it longer. If you cook it too fast and too hot it will separate.
At 285 put a drop of toffee in a cup of ice water, it should be brittle. If not, cook to 295 for brittle, melt in your mouth toffee. I cooked it 5 minutes past 285 degrees and it was perfect. Remember to look for the dark amber color in addition to the cooking temperature.
When the toffee is done, pour into the prepared pan. If the top appears a little oily, blot with a clean paper towel, that will help the chocolate adhere. Sprinkle the chocolate over the top, and let it set to soften for a couple minutes, then spread into a thin layer. Sprinkle the almond/pecan mixture over the chocolate, pressing in slightly (put your hand in a baggie to keep the mess down).
Place the toffee in the refrigerator to chill until set. Break into pieces, and store in an airtight container. In an airtight container it will freeze nicely for up to a year. During the winter, store a container of this in your chilly shop. It makes a wonderfully brittle treat with a cup of hot coffee after a trip to the range with your revolver and some .357 rounds.