Lara's French Onion Soup

This is my recipe:

1/2 c. butter
4 large sweet onions, sliced thinly
1/2 c. sugar
2 TPBS flour
2 cans Beef Borth 14.5 oz each
2 cans Condensed French Onion Soup
2 cups water
1/2 c. parmesan cheese
french bread sliced
mozzarella cheese

In a dutch oven over med-high heat, melt butter. Add onions: saute until tender. Add sugar: cook and stir until lightly brown. Stir in flour until blended: gradually add the broth, soup, and water. Bring to a boil. Reduced heat and cover and simmer for 10 minutes. Stir in Parmensan cheese.

Melt cheese ontop of bread slices in the oven. It should take 2 minutes.