This is a classic french onion soup with a twist. instead of broiling bread with cheese on top you accompany this delicious soup with a rustic grilled cheese sandwich which the kids will be sure to enjoy. You can also make it the traditional way with the bread and cheese on top. If you do not have oven safe bowls just place the bread and cheese on a broiling rack and broil separately. I use yellow onions but sweet onions are the preferred onion to use, better yet if you can find them, walla walla onions.