Press saute function on a large multi-cooker; select vegetables setting. Press timer; set to 30 minutes. Start. Melt butter in inner pot. Add onions; cook and stir until tender and golden, 25-30 minutes. Press cancel., Stir in broth, garlic, thyme, Worcestershire sauce and salt. Lock pressure lid. Press pressure function; select vegetables setting. Set to long cook time (12 minutes). Start. , Quick-release pressure. If desired, stir in brandy. Ladle soup into individual serving crocks. Place wire rack into inner pot. Arrange buttered toast on rack. Top with cheese. Cover with air frying lid. Press air fry function; select custom setting. Press timer; set to 2 minutes. Start. Cook until cheese is melted. Serve toasts over soup.