Mum used to make Jam Roly Poly and I have a similar recipe but for Butterscotch Roly Poly. I haven't tried steaming in the Varoma, but if it helps anyone here is a recipe:
Ingredients:
150g plain flour
20g butter
1 tsp baking powder
pinch salt
Sauce:
1 cup boiling water
1/4 cup sugar
few drops vanilla
1 tablespoon butter
1/4 cup syrup (probably golden)
raspberry jam, to spread
Method:
Rub butter through flour (do by TM), add other dry ingredients, mix with with approx 70g mik to make a firm to medium dough. Spread with jam, roll up and place in a baking dish. Pour sauce over and bake in a moderate oven for 30 minutes. Serve hot with custard.