1. Coat an 8-inch square baking dish with nonstick cooking spray.
2. In a large saucepan, bring the butter, heavy cream, granulated sugar,
brown sugar, and salt to a boil over medium heat, stirring frequently. Allow
to boil for 5 minutes, stirring constantly, then remove the pan from the
3. Stir in the pecans and vanilla. Add the confections' sugar and stir until
smooth and well combined. Spread the mixture into the baking dish.
4. Allow to cool to room temperature then cut into 1-inch squares and serve,
or store in an airtight container until ready to serve.