Tomato & Vegetable Pasta Sauce

Ingredients
2 tbs olive oil
1 brown onion, finely chopped
2 carrots, peeled, finely chopped
2 zucchini, ends trimmed, finely chopped
2 celery sticks, ends trimmed, finely chopped
1 garlic clove, crushed
700ml tomato pasta sauce (Passata Sauce)
Pinch of sugar
Method
To make the tomato & vegetable sauce, heat the oil in a large heavy-based saucepan over medium heat. Add the onion, carrot, zucchini, celery and garlic and cook, stirring often, for 5 minutes or until the vegetables soften.
Add the passata to the pan. Cover and bring to the boil. Reduce heat to low and cook, covered, for 10 minutes.
Uncover and cook for a further 5 minutes or until the sauce reduces and thickens.
Add the sugar and stir until well combined.
Season with salt and pepper.
Divide the gnocchi among serving bowls. Spoon over the tomato & vegetable sauce. Sprinkle with basil and parmesan to serve.