Easy Vegan Haggis

Name: Easy Vegan Haggis
Prep time: 10 min
Cook time: 1 h 10 min
Total time: 1 h 20 min
Cuisine: European, Middle Eastern
Ingredients: 150 ml/ 1 cup red lentils; 350 ml/1.5 cups vegetable stock (2 stock cubes); 2 tsp thyme; 1 tbsp rapeseed oil; 1 large onion, finely chopped; 2 cloves garlic, crushed; 2 medium carrots, grated; 6 large closed cup mushrooms, diced; 3 tsp dried coriander; 180g/ 1 cup cooked kidney beans (I used drained tinned beans) , roughly chopped; 3 tbsp pumpkin seeds; 2 tbsp sunflower seeds; 100g/ 1 cup oats; 1 tbsp marmite (or other yeast paste); salt and pepper