In a small saucepan, combine apricots, vinegar, and sugar over medium-high heat, and bring to a boil. Reduce heat to a simmer, and cook until apricots are softened and mixture is slightly thickened, 3 to 5 minutes.
Let cool slightly before using, or cover and refrigerate for up to a day.
Recipe by TeaTime Magazine at https://teatimemagazine.com/apricot-prosciutto-chive-goat-cheese-croustades-recipe/