onions, thinly sliced
campbell's beef broth
- Melt butter in heavy pot. When foaming add onions and salt. Fry for 30-60 minutes, stirring occasionally. Be careful not to burn or they will become bitter. Let onions turn a deep, rich brown.
- Remove from heat and stir in flour. Return to heat stirring constantly for 1-2 minutes.
- Pour in liquids. Simmer for 30 minutes.
- Pour into crocks, top with thick slice of French bread and then Swiss cheese. Broil until bubbly.