Slow Cooker Vegetarian Paella

Name: Slow Cooker Vegetarian Paella
Ingredients: 650ml (22½ fl oz) vegetable stock; 125ml (4 fl oz / ½ cup) white wine (or extra stock/water); Pinch of saffron threads; 1 tbsp olive oil; 1 brown onion, finely chopped; 2 garlic cloves, crushed or finely chopped; 1 red bell pepper (capsicum), seeds and membranes removed, coarsely chopped; 220g (7¾ oz / 1 cup) paella or arborio rice; ½ tsp smoked paprika; 3 firm, ripe tomatoes, quartered; 150g (5½ oz) green beans, trimmed and cut into 1cm (½ inch) pieces; 140g (5 oz / 1 cup) frozen peas, thawed; 35g (1¼ oz / ¼ cup) slivered almonds; 2 tbsp chopped flat-leaf parsley; 1 lemon, cut into wedges