Coffee Toffee Crunch

Directions

1. 1
   Butter a 12- by 17-in. rimmed baking pan. Measure out vanilla and set aside.
2. 2
   In a 2- to 3-qt. saucepan over medium-low heat, stir sugar, butter, 1/4 cup water, corn syrup, and espresso powder until butter is melted and you no longer see sugar crystals. Increase heat to high and boil, stirring occasionally, until mixture reaches 300° on a candy thermometer, 4 to 5 minutes. Quickly remove from heat and carefully stir in vanilla (mixture will bubble up). Immediately spread thinly in prepared baking pan and let cool until hard, about 20 minutes.
3. 3
   Flex pan to release toffee. If using for topping cake, finely chop enough to make 1 1/4 cups. Break remaining toffee into small chunks and reserve for garnish. Store in an airtight container at room temperature for up to 1 week.
4. 4
   Note: Nutritional analysis is per serving.