Low FODMAP Lentil pie

Ingredients

• 2 celery stalks, chopped
• 2 large carrots, diced into small cubes
• 2 tbsp of garlic infused olive oil
• 250ml of passata
• 2 tbsp of tomato paste
• 1 cup of Massel’s onion and garlic free stock
• 2 bay leaves
• 2-3 sprigs of fresh thyme or rosemary (dried herbs will also work for this recipe)
• 1 x 400g can of lentils
• 800g potato, washed and halved
• 100g butter
• ½ cup milk
• 100g grated cheese + 1 handful