Boil the sweet potatoes, with their skin on, for about 17-20 minutes or until tender. Let them cool slightly. You can also microwave the sweet potatoes or roast them in the oven.
Preheat the oven to 425°F (220°C). Place a baking sheet on the middle rack in the oven. Butter 4 ramekins of 8-9 oz (230-250ml) capacity and coat the bottom and sides with fine breadcrumbs. Discard excess breadcrumbs.
Separate whites from yolks and set aside until ready to use.
Peel the potatoes and transfer them to a large bowl. Mash the potatoes using a potato masher.
Add the egg yolks and salt and mix to combine.
Stir in grated cheddar cheese, a pinch of nutmeg and freshly ground black pepper.
Add melted butter and light cream and mix to combine. Set aside.
Whip the egg whites until stiff peaks form.
Gradually fold the whipped whites into the potato mixture.
Divide the mixture evenly into the prepared ramekins. Sprinkle Parmesan, freshly ground black pepper and paprika on top of each.
Place the ramekins onto the preheated baking sheet and bake at 425°F (220°C) for 25-30 mins until golden and puffed.
Serve immediately. You can serve the souffle alongside a fresh salad, meat and crusty or toasted bread. Enjoy!