Lentil salad with tahini dressing

Name: Lentil salad with tahini dressing
Prep time: 15 min
Cook time: 20 min
Total time: 35 min
Ingredients: 2 tbsp cold-pressed rapeseed oil; 320g sweet potatoes , cut into cubes; 2 large carrots , cut into thin sticks (320g); 2 large courgettes , (375g) cut into chunks; 2 medium red onions , halved and sliced; 1 tsp cumin seeds; 2 tbsp finely chopped ginger; 2 tbsp pumpkin seeds; 2 x 390g cans green lentils , drained; 2 tsp vegetable bouillon powder; 1 lemon , zested; good handful of mint , roughly chopped; handful of parsley , roughly chopped; 2.5-3 tbsp tahini; 1 garlic clove , finely grated; 2 x 120g pot bio yogurt; a little smoked paprika , to serve