Method:
1 Preheat oven to 200°C fan forced.
2 Combine butter, parsley, breadcrumbs and salt and pepper in a small food processor. Process until well combined.
3 Spread herb butter mixture over lamb. Place lamb on a baking tray lined with baking paper and roast for 10 minutes for medium-rare or until cooked to your liking. Slice lamb.
4 Combine cannellini beans, lemon juice, garlic and ¼ cup water in a food processor, season with salt and pepper and process until smooth.
5 Spoon the white bean puree on plate, top with sliced lamb, season with salt and pepper. Serve.