• In a large saucepan over medium heat, combine the butter, sugar, heavy cream, and corn syrup.

  Stir until the butter is melted and the mixture is well combined.

  Bring to a gentle boil, then reduce heat and simmer for 5 minutes, stirring frequently.

  Remove from heat and stir in the vanilla extract.

  Let cool slightly before serving.

Notes

• Use a large saucepan to prevent boiling over.

  Syrup will thicken slightly as it cools.

  Leftovers can be stored in the refrigerator and reheated gently in the microwave or on the stovetop.