Arrange zucchini in glass baking dish.
Cover, cook on high (9) for 4 to 6 minutes or until tender.
Scoop out enough pulp to make a 1/4 inch indentation.
In mixing bowl, thoroughly mix sour cream and garlic powder together.
Spread evenly onto zucchini halves.
Sprinkle with shredded cheese and wheat germ.
Cook on high (9) for 1 to 2 minutes or until cheese is melted.