Preheat oven to 430 (220C). Place sweet potato chunks, olive oil, salt and pepper onto baking tray and give a good toss.
Roast for 25-30 minutes or until tender, stirring halfway through. Set aside to cool down.
Place all ingredients (except for extras and topping) into food processor and blitz until smooth. You may have to scrape down the sides a few times to ensure that it all mixes together.
Serve with extra olive oil, paprika and seedy topping.