01 - Pound each beef escalope between two sheets of plastic wrap until approximately 0.2 inch thick for even cooking.
02 - Arrange three shallow dishes: first with flour seasoned with salt and pepper, second with beaten eggs whisked with milk, third with panko breadcrumbs mixed with grated Parmesan.
03 - Coat each escalope in flour mixture, shaking off excess. Dip into egg mixture, allowing excess to drip off. Press firmly into breadcrumb mixture to ensure thorough coating.
04 - Combine vegetable oil and butter in a large frying pan. Heat over medium-high heat until butter foams slightly.
05 - Cook escalopes for 2 to 3 minutes per side until golden brown and crispy. Fry in batches without overcrowding the pan to maintain proper temperature.
06 - Transfer cooked escalopes to paper towels to drain excess oil. Keep warm in a low oven if necessary.
07 - Plate the crispy escalopes while hot. Garnish generously with chopped fresh parsley and accompany with lemon wedges for squeezing.