Ingredients
Serves 6
3 pounds yellow onions, cut into 1/8-inch pieces
3 tablespoons unsalted butter
1/2 teaspoon table salt, plus more as needed
1 pinch sugar
8 cups water , plus more as needed
1 tablespoon all-purpose flour
1 sprig fresh thyme
1/4 cup dry white wine
1 baguette , crusty
8 ounces Gruyère cheese-I sliced it thick and placed it over the top of the crock…..the cheese melted mostly into the soup and a little off to the sides, but it created a thick, even layer this way.
Preparation
