In a large heavy pan, sauté' the onion and garlic in olive oil until softened.
Add prosciutto and all of the herbs.
Remove from stove and add this to all of the cheeses.
Salt and pepper to taste.
Cut off stems and any green end of the blossoms.
Cut a slit through in between two blossom petals and open up each blossom to lay them flat on a platter or piece of parchment paper.
Remove the stamen.
Place a spoonful of filling in each blossom.
Roll up each stuffed blossom and press edges together.
Be careful not to let any filling ooze out of the blossoms.
May be refrigerated at this point for one day or fried right away.