Lamb Red Lentil and Sweet Potato Pie - Vickery TV

Ingredients

• 500 g lamb mince
• 2 small onions (very finely chopped)
• 1 large carrot (roughly chopped not too large)
• 2 tsp dried thyme
• 600 ml lamb or beef stock
• 100 g red lentils
• 4 tbsp flour
• 2 tbsp soft butter (heaped)
• 300 g potatoes (peeled and chopped)
• 400 g sweet potatoes (peeled and chopped)
• 50 g butter (really up to you.)
• salt and freshly ground black pepper