Veggie haggis

Ingredients

• 100g onion, finely chopped
• 1 tbsp sunflower oil
• 50g carrots, very finely chopped
• 35g mushrooms, finely chopped
• 50g red lentils
• 600ml vegetable stock
• 25g cooked red kidney beans, mashed
• 35g peanuts, ground
• 25g hazelnuts, ground
• 1 tbsp soy sauce
• 1 tbsp lemon juice
• 2 tsp dried thyme
• 2 tsp dried rosemary
• Generous pinch cayenne pepper
• 2 tsp mixed spice
• 200g fine oatmeal
• 1 tsp freshly ground black pepper
• Salt to taste