Shepherd's Pie

Ground Beef

• 1 oz unsalted butter, plus extra to grease
• 3 ½ oz yellow onions, halved
• ½ oz fresh parsley
• 16 oz ground beef, broken into pieces
• ½ tsp salt
• 1 pinch ground black pepper, to taste
• 1 tbsp Madeira wine (可选的)

Mashed Potatoes

• 32 oz russet potatoes, sliced (¼ in.)
• 13 oz whole milk
• 1 tsp salt
• 1 pinch ground black pepper, to taste
• 3 oz unsalted butter, cut into pieces, divided
• 2 tbsp bread crumbs (可选的)
  或 2 tbsp grated cheese (可选的)