Preheat oven to 200C fan.
Place the spiralized sweet potato in a large bowl, add the olive oil and mix everything together ensuring all of the potato is coated.
Place onto a lightly greased baking tray and bake for 10 – 15 minutes until crispy, but not burnt!
Whilst the potatoes are baking, make the spinach pesto.
Put the Brussels sprouts into a saucepan, pour boiling water from a kettle over them, add a little salt and bring the water back to the boil. Allow to cook for about 5 minutes or until just tender.
Empty the sprouts into a colander and immediately rinse with cold water.
Put the cooled Brussels sprouts, garlic and olive oil into a food processor.
Pulse all together until pureed then add the pine nuts and the lemon juice and pulse again until completely pureed and then season to taste.
Transfer to a bowl stir in the Parmesan cheese.
When the potatoes are cooked, divide equally between plates and top with 2 tbsp. of the Brussels Sprout Pesto.
Garnish with some freshly grated Parmesan cheese and serve!