Green beans platter (vegan)

Name: Green beans platter (vegan)
Prep time: 20 min
Cook time: 10 min
Total time: 30 min
Cuisine: Middle Eastern
Ingredients: 30 g / 1 oz pistachios (almonds or walnuts work too!); 250 g / 1¼ cups neutral vegan yoghurt; 30 g / 2 tbsp hulled tahini; 1 garlic clove, finely grated and soaked in 1 tbsp lemon juice; 1 small lemon, zest and 1 tbsp juice; salt & pepper; 300 g / 10 oz green beans, I used fine green beans; 15 g / 0.5 oz basil leaves (not stalks) + more to garnish; green tops from 1 spring onion/scallion, well cleaned; 45 ml / 3 tbsp extra virgin olive oil