Lentil and Vegetable Bolognese Sauce

Name: Lentil and Vegetable Bolognese Sauce
Prep time: 5 min
Cook time: 45 min
Total time: 45 min
Yield: 4 portions
Ingredients: 150 g red split lentils; 700 g water; 80 g onions; 1 Tbsp olive oil; 2 garlic cloves; 400 g tomatoes, tinned; 150 g courgettes; 50 g button mushrooms; 2 - 3 Tbsp tomato purée; ½ tsp dried oregano; ¾ tsp fine sea salt; ¼ tsp ground black pepper; 3 sprigs fresh basil leaves