onion soup-style farro

This is from the Food Network magazine… I got this from a friend and just had to try it.. I love onion soup and just bought some farro.  If you can't find farro you could substitute barley.  I actually used 1/2 brown rice along with the farro. It is a great side dish…
 2 tbsp. unsalted butter
1 large onion, thinly sliced
2 tbsp. brandy or cognac
2 cups farro
1 tbsp Worcestershire
1 1/2 c chicken broth
Kosher salt, and freshly ground pepper
1 bay leaf
1/4 c. grated parm. cheese
1 cup (4oz) grated gruyere cheese

Preheat oven to 400 Melt the butter in a medium pan, add the onion and cook until softened , about 5 min..Add brandy, cook 2 min. Add the farro ,Worcestershire ,1/2 tsp salt and some pepper. Cook, stirring until farro is coated. Stir in chicken broth, 1 1/2 cups water bay leaf, bring to boil and add parmesan cheese.  Transfer to a casserole dish, ( I used my 9 x 13 porcelain , cast iron pan)
cover with foil and bake about 40 til farro is tender and water is absorbed.  Uncover and sprinkle with the gruyere and put under the broiler and broil until golden brown…