Peppered lamb & minty butter bean mash - Good Food Middle East

Ingredients

• 2 x 410g cans butter beans, drained and rinsed
• 6 tbsp olive oil
• 1 garlic clove, crushed
• juice of 1 small lemon
• small handful mint leaves, roughly chopped
• 4 leg of lamb steaks, weighing about 140g/5oz each
• 1 tbsp coarsley ground black pepper
• 85g bag watercress, to serve