You will need
Sauté the onion, pre-seasoned with Vegetable Spice, very slowly in the olive oil under a blanket of baking paper. Add the garlic once onions are soft and aromatic. This can be done in advance.
Before serving: turn up the heat, add the grated courgettes and briefly stir-fry until crisp-tender. Add Basil Pesto and taste for seasoning.