Pre-heat oven to 160° C/ 140°C and grease a 1.5L ovenproof dish.
Spread slices of bread thinly with marmalade (or jam) and cut into triangles
Line half of greased baking dish with half of the bread pieces. Sprinkle sultanas and half of the sugar over the bread. Top with remaining bread, with marmalade/jam side on top. Sprinkle with the remaining sugar
Beat eggs, Vitasoy Soy Milky Lite and vanilla essence well together. Pour evenly over bread, ensuring well coated. Leave to stand for 30 minutes to allow Vitasoy Soy Milky Lite to soak into bread
Bake one hour, or until golden brown and custard set. May be served warm or cool