Step 1

Line a large rimmed baking sheet with parchment paper.

Step 2

To a medium, heavy-bottom saucepan over medium heat, add butter and sugar. Cook, stirring only occasionally with a wooden spoon until the candy reaches 285°F on a candy thermometer. (It should be a dark amber color.) This will take between 35-45 minutes; don't rush it. If your temperature is rising too quickly, turn the heat down slightly.

Step 3

Pour the candy mixture onto an 11x15 lined baking sheet. While still hot, top with chocolate chips in an even layer. Let it rest for 1-2 minutes to allow the chocolate time to soften and melt. Carefully spread the chocolate into an even layer.

Step 4

Sprinkle with pecans and gently press them into the melted chocolate.

Step 5

Let it sit for about 1 hour, or until set.

Step 6

To serve, break into pieces.

Step 7

To store, place pieces in an airtight container at room temperature for up to a week.