melt butter and sugars in medium saucepan, medium heat, stirring frequently

continue melting and stirring until sugar mostly dissolved

add milk a little at a time

bring to a simmer, stirring (at least!) every 10 seconds

remove from heat, transfer to glass container

let cool at room temperature before storing in fridge

enjoy!! (on pretty much everything!)

(this makes about 1 cup of caramel sauce)