2. Heat the mixture over medium heat, stirring frequently, until the sugar dissolves.
3. Once the sugar has dissolved, reduce the heat to low and let the mixture simmer gently for 30-40 minutes. Stir occasionally to prevent sticking.
4. As the mixture thickens, add the butter and stir until melted.
5. Remove from heat and stir in the vanilla extract.
6. Allow the mixture to cool. It will continue to thicken as it cools.
7. Pour into an airtight container and store in the refrigerator for up to 2 weeks2. Heat the mixture over medium heat, stirring frequently, until the sugar dissolves.
3. Once the sugar has dissolved, reduce the heat to low and let the mixture simmer gently for 30-40 minutes. Stir occasionally to prevent sticking.
4. As the mixture thickens, add the butter and stir until melted.
5. Remove from heat and stir in the vanilla extract.
6. Allow the mixture to cool. It will continue to thicken as it cools.
7. Pour into an airtight container and store in the refrigerator for up to 2 weeks
