Melt together butterscotch chips and margarine, stirring constantly.
Blend the following into the butterscotch mixture; flour, brown sugar, baking powder, salt, vanilla and eggs.
While the mixture is still warm (Celine puts it in the microwave and warms it…I left it on the burner on low heat)add chocolate chips, marshmallows and nuts.
Bake for 20-25 minutes at 350 degrees in a 9×13 pan. Must let cool before being able to cut cleanly.
