Chop the vegetables into smal pieces, and it's important that you first heat vegetables that require softening in the microwave for 1 to 2 minutes. Cut the bread into large pieces and arrange in a heat-resistant dish.
Add the tomato sauce and water to the warm vegetables. Add other vegetables if using and mix together.
Cover the bread with the soup from Step 2. Add anything like sausage, then mayonnaise and shredded cheese if you like.
Broil in the toaster oven and it's done. As a guide: the mayonnaise and cheese should cook until they're golden brown.
Story Behind this Recipe
I was really surprised by the rich taste of Del Monte's tomato sauce! It's so easy, but one can provides such a satisfying flavor.
Use whatever vegetables you want! If you have some, cherry tomatoes and carrots are good, too. If you add even a little cheese or mayonnaise, it really enhances the flavor of the soup with plenty of umami.