This creamy French chicken and potato bake is a comforting and delicious dish that is perfect for a family dinner. Tender chicken breasts are cooked with sliced potatoes in a creamy sauce made with garlic, thyme, and Dijon mustard. The dish is then topped with grated cheese and baked until golden and bubbly. The result is a creamy and flavorful chicken and potato bake that is sure to be a hit with everyone at the table.