Sauté the sliced onion until translucent. Add the corn, zucchini strips, and shredded chicken. Cook for a few minutes, then add the sour cream and a splash of water. Season with salt, pepper, and chicken bouillon powder. Cook until the zucchini is tender.

Meanwhile, flatten each slice of bread with a rolling pin or a glass. Arrange the slices in a microwave-safe baking dish and spread a little sour cream on each with a spoon.

Spoon the chicken mixture on top, then sprinkle with shredded Manchego (or Gouda) and Parmesan cheese. Add another layer of bread, more chicken mixture, and more cheese. Microwave for 3 minutes or until the cheese is melted. Enjoy!