Instructions: 1. Heat a large heavy pot over medium heat. Add oil and onions and toss to combine. Cook over very low heat for 1-1/2 to 2 hours, stirring every 15 to 20 minutes.

2. Dissolve mis0 in 1/2 cup water and add to pot along with remaining water Bring to a boil, stir well, and remove from heat.

3. Preheat broiler.

Divide hot soup between 4 individual oven-proof bowls. Spread bread slices with mustard and place mustard-side down on top of soup. Sprinkle equal amounts of cheese over bread.

4. Place bowls under broiler until che

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