"Make this comforting pie in bulk and freeze in separate servings, so you can defrost only what you need..."
INGREDIENTS
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50g butter
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2 onions, chopped
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4 carrots, diced
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1 head of celery, chopped
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4 garlic cloves, finely chopped
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200g pack chestnut mushrooms, sliced
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2 bay leaves
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1 tbsp dried thyme
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500g pack dried green lentils (we used Merchant Gourmet Puy lentils)
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100ml red wine (optional)
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1.7l vegetable stock
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3 tbsp tomato purée
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2kg floury potatoes, such as King Edwards
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85g butter
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100ml milk
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50g cheddar, grated