• 2 tablespoons olive oil
• 2 large zucchini (courgettes), cut into approximately 1 cm (½ inch) dice
• 250

Heat the oil in the insert pan of the slow cooker or a frying pan over medium heat and cook the zucchini for 5–6 minutes until lightly golden.

Return the insert pan, if using, to the slow cooker, or transfer the zucchini to the slow cooker with the cherry tomatoes, pesto, mozzarella and half the parmesan.

Add the pasta and the passata, then add