Brown Sugar Sauce

This sauce is AMAZING! Especially if you have warm blueberry cake (which I tried to make twice last week and didnt turn out, I was not made to make that cake). Its so easy and so simple.

1 cup brown sugar

1 1/2 tablespoon flour

pinch of salt

1 cup boiling water

1 tablespoon butter

1/2 teaspoon vanilla

Mix brown sugar, flour, salt and boiling water in a sauce pan. cook on low heat until thickened. then add butter and vanilla