Combine avocado, basil, 4 tsp lemon zest, 6 tbsp lemon juice ... Blend until smooth, adding a little water if needed to achieve a sauce-like consistency. Season with salt or lemon juice to ...
Tip it into the slow cooker, along with the remaining stock. Add the lemon zest and basil and season with salt and pepper, then give everything a good stir. Spread the courgettes over the top of ...