Figgy nut and date oats

Name: Figgy nut and date oats
Ingredients: 200g/7oz jumbo oats (gluten-free if necessary); 2 tbsp chia seeds; ½ tsp ground cardamom; 4 tbsp natural yoghurt; 400ml/14fl oz full-fat milk; 1 tbsp roughly chopped hazelnuts; 1 tbsp roughly chopped walnuts; 1 tbsp roughly chopped almonds; 2 tbsp honey; 4 tbsp date molasses (optional); 4 tbsp light tahini (optional); 8 medjool dates, stones removed, roughly chopped; 8 dried figs, roughly chopped; 4 tbsp pumpkin seeds; 50g/1¾oz slivered pistachios, to garnish (optional)