Pumpkin hommus with green dippers (Toddlers and beyond)

Name: Pumpkin hommus with green dippers (Toddlers and beyond)
Prep time: 15 min
Cook time: 50 min
Total time: 1 h 5 min
Cuisine: Middle Eastern
Ingredients: 500 g pumpkin, peeled and cut into pieces (1-2 cm); 2 tbsp extra virgin olive oil, plus extra for drizzling; 500 g filtered water, plus an extra 1-2 tablspoons; 300 g green beans or a mix of green and yellow beans, trimmed; 1 bunch asparagus, trimmed; 400 g canned chickpeas, rinsed and drained (approx. 250 g after draining - see Tip); 1 - 2 tbsp tahini, to taste; ½ lemon, juice only