Best Ever Toffee

1 pound butter

1 cup white sugar

1 cup packed brown sugar

2 cups semisweet chocolate chips*

Directions

1. In a heavy saucepan, combine butter, white sugar, and brown sugar. Cook over medium heat, stirring constantly until mixture boils. Boil to brittle stage, 300 degrees F (150 degrees C) without stirring. Remove from heat.
2. Pour hot mixture into candy molds. Spread semisweet chips* on top; let melt, then spread with a spatula or rubber scraper. 
3. Let the mixture cool and break it into pieces before serving.

* Can substitute milk chocolate chips if desired.