Preheat oven to 200C.
Prick potatoes, place on a lined oven tray, drizzle with oil and sprinkle with salt. Bake on middle oven rack for 35-45mins (depending on size) until cooked through and tender.
Add all the ingredients for the beans into a baking dish and mix well. Cook on upper oven rack for 25-30mins, stir half way through, until beans are slightly reduced and rich in colour and flavour. Season to taste.
Slice potatoes open, add a knob of butter, top with beans and dollop over creamy topping of your choice. Serve with salad greens.
