Step 1
Finely chop the onion from [A]. Remove the stems from the shiitake mushrooms.
Step 2
Mix the ground meat, the chopped onion from 1, and the [A] thoroughly in a bowl.
Step 3
Dust the shiitake mushrooms from 1 with flour, then stuff them with the mixture from 2.
Step 4
Heat vegetable oil in a frying pan and cook the stuffed shiitake mushrooms from 3.