1/2 cup Earth Balance margarine
1/2 cup coconut oil (I used expeller pressed so as not to have a coconut flavor)
1 cup brown sugar
1 teaspoon real vanilla extract
In a saucepan, melt together butter, coconut oil and brown sugar. Stir continually until all ingredients are mixed well, bringing the mixture ALMOST to a boil, then turning down the heat. Cook and stir some more on low heat until the sugar is dissolved and the mixture is a liquid.
NB: I’ve only made butterscotch using actual real butter (hence the name butterscotch), but the Earth Balance margarine, in my cookie experience, is a comparable substitute.
Let us know how the parve version comes out.