Roast mixed vegetables and lentil soup

Ingredients

• 300 grams pumpkin, peeled, seeds removed, cut into chunks
• 2 red capsicums, seeds removed, cut into wedges
• 2 red onions, quartered
• 1 sweet potato, peeled, cut into chunks
• 1 potato, peeled, cut into chunks
• 1 carrot, cut into chunks
• 1 zucchini, cut into chunks
• 3 cloves garlic, peeled
• 2 tablespoons olive oil
• 2 litres water
• 400 grams can diced tomatoes
• 1/3 cup lentils
• 3/4 cup milk
• croutons, shaved parmesan, to serve