Ingredient list:

1 1/2 cups of toasted pecans.
1 1/4 cups of light brown sugar, firmly packed.
2 tablespoons of water.
1/2 cup of sweet butter.
1 teaspoon of vanilla.
1/4 teaspoon of baking soda.
6 ounces of semisweet chocolate, in pieces or chopped.

Directions:

Using a food processor, pulse the the toasted pecans until finely chopped.

Sprinkle half of the pecans on a 7*10-inch area on a buttered cookie sheet.

In a heavy, medium sized saucepan, combine the brown sugar, water, and butter, and stirring constantly, bring to a boil. Stir often to prevent burning until the mixture reaches 285F.

Remove the saucepan from the heat and add the vanilla and baking soda.

Pour the toffee mixture evenly over the 7*10-inch rectangle on top of the nuts.

Immediately scatter the chocolate pieces over the hot toffee.

Wait for 5 minutes, then spread the chocolate using a long metal spatula in an even layer.

Dust the chocolate with the remaining chopped pecans.

Allow to cool completely and break into pieces.

Source: Toffee Recipe.