Crumble beef in 9-inch square microwave-safe baking dish; sprinkle with garlic.
Cover; microwave on high 3 minutes.
Meanwhile, cut zucchini in half lengthwise, then crosswise into 1/4-inch slices.
Add zucchini, onion, tomatoes, rice, soy sauce, basil and 1/2 cup water to ground beef, stirring to combine.
Cover and microwave on high 27 minutes, or until rice is tender; stir frequently.