1. Heat 2 tbsp. butter in a 10" skillet over medium heat until lightly browned. Add shallots and cook, stirring occasionally, until soft, about 5 minutes. Add wine, bay leaf, and thyme; cook until wine has almost evaporated,
about 10 minutes. Add cream; cook, stirring occasionally, until reduced by half, about 4 minutes. Discard bay leaf and thyme; remove pan from heat. Add 5 tbsp. butter in small batches, whisking until each batch melts and sauce is smooth before adding the next. (For a smoother sauce, set a fine strainer over a small skillet and strain beurre blanc, if you like.) Season sauce with salt and pepper, cover, and keep warm.