Prawn Thermidor is a classic French dish that features succulent prawns cooked in a creamy and flavorful sauce. The prawns are first saut茅ed in butter and then smothered in a rich sauce made with white wine, Dijon mustard, and Gruyere cheese. The dish is then baked until the cheese is golden and bubbly. Prawn Thermidor is a decadent and elegant dish that is perfect for special occasions or a fancy dinner party.