White bean and leek soup with garlic breadcrumbs

Name: White bean and leek soup with garlic breadcrumbs
Cook time: 30 min
Total time: 30 min
Cuisine: British
Ingredients: 2 tbsp olive oil; 1 leek, halved and thinly sliced; 2 celery sticks, finely chopped; 2 garlic cloves finely chopped; 1 tsp fresh thyme leaves; ¼ tsp crushed chillies (optional); 2 x 400g tins cannellini beans, drained and rinsed; 1 vegetable stock pot, made up to 1 ltr; 1 bay leaf; ½ sweetheart cabbage, roughly shredded; 125g baby spinach; 2 tbsp olive oil; 2 garlic cloves, peeled and left whole; 5g fresh thyme leaves; 2 slices brown bread, blitzed into crumbs (60g); ½ lemon, zested