4 large onions, sliced
\n1\/4 cup butter1 tbsp flour
\n1\/2 cup shredded Mozzarella cheese
\n6 cups (48 oz) beef broth
\na few drops hot pepper sauce
\n6 slices French bread, toasted, or croutons<\/p>\n
Cook onions in butter until transparent. Add flour; cook, stirring, until flour is well blended into the butter. Transfer onion mixture to slow cooker. Add beef broth and hot sauce. Cook on low for 6 to 8\u00a0 hours or high 3 to 4 hours. Ladle soup into oven-proof bowls. Top with bread and some of the shredded cheese. Broil until cheese melts.<\/p>\n
Serves 6.<\/p>\n
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