Speedy French Onion Soup

Step 1
Melt butter in a 4-quart saucepan over medium heat. Add onions; cook and stir until well browned and caramelized, about 15 minutes.

Step 2
Stir in sweet onion soup and consomm?. Pour water into the consomm? can, swirl, and add to the saucepan; bring to a boil. Reduce the heat to low and cook, stirring occasionally, for 10 minutes.

Step 3
Meanwhile, preheat the oven to 425 degrees F (220 degrees C). Arrange Texas toast on an ungreased baking sheet.

Step 4
Bake in the center of the preheated oven until browned, 2 to 3 minutes per side.

Step 5
Ladle soup into four bowls and top each bowl with toast slice.