01 - Gently pound each beef escalope between two sheets of plastic wrap until approximately 0.25 inch thick for even cooking.
02 - Arrange three shallow dishes: first with flour mixed with salt and pepper, second with beaten eggs combined with milk, third with panko breadcrumbs blended with grated Parmesan.
03 - Dredge each escalope in seasoned flour, shaking off excess. Dip into egg mixture, then coat thoroughly with breadcrumb-Parmesan blend, pressing gently to ensure adhesion.
04 - Combine vegetable oil and butter in a large frying pan. Heat over medium-high temperature until butter foams slightly.
05 - Cook each escalope for 2-3 minutes per side until golden brown and crispy. Fry in batches to prevent overcrowding and maintain oil temperature.
06 - Transfer cooked escalopes to paper towels to drain excess oil. Keep warm in a low oven if necessary while finishing remaining batches.
07 - Arrange on plates and garnish generously with chopped fresh parsley. Serve immediately with lemon wedges on the side.