French onion soup!

French Onion Soup

4 cups beef broth
3 cups yellow onion, thinly sliced
1/4 cup butter
1 1/2 tsp. salt
1/4 cup sugar
2 Tbsp. flour
1 cup freshly grated
Parmesan cheese
sliced French bread
additional Parmesan cheese

Pour broth into a slow cooker set on high; cover and set aside to warm. In a skillet over medium heat, cook onion slowly in butter until tender; cover and cook about 15 minutes. Add salt, sugar, flour. Stir well; add to broth in slow cooker. Cover and cook on high setting for 3 hours, or reduce heat to low setting and cook for 6 to 8 hours (preferred). At serving time, stir in cheese. toast bread under broiler; place in bottom of bowl and ladle soup over bread. Sprinkle with additional cheese. Serves 8.