See below

Put 5 Tbls. butter & 1 cup light brown sugar in small saucepan. Stir
over low heat until butter melts & mixture is smooth. Add 1/4 cup
half & half & a pinch of salt. Bring to boil over medium heat. Reduce
heat & simmer 4 minutes. Remove from heat. Stir in 1/2 tsp. vanilla.
Cool 10-15 minutes or until glaze thickens slightly before using.