In a medium saucepan, bring brown sugar, corn syrup, cream, butter, and salt to a boil over medium-high heat; cook, whisking constantly, for 2 minutes. Remove from heat; whisk in vanilla. Transfer mixture to a medium heatproof bowl. Let cool for 20 minutes. Use immediately.
Notes
PRO TIP: If Toffee Glaze begins to set up, microwave on high in 10-second intervals, stirring between each, until melted and smooth.
Recipe by Bake from Scratch at https://staging.bakefromscratch.com/apple-pecan-spice-cake-with-toffee-glaze/