There are many delicious ways to use onion soup mix besides making soup, and it's worth experimenting with it as a dry rub ...
Meanwhile make the croutons ... the beef stock in this French onion soup could be substituted for mushroom stock. If you don't have Madeira, you can use dry sherry, white vermouth or just leave ...
Wash and pat dry ... soup into cups or bowls and drizzle over the oil. Chop a teaspoon of the buds and dot a little around each bowl. Rub the flour and butter to fine crumb consistency. Mix ...