Ingredients

1/2 cup balsamic vinegar1/2 cup water1 tablespoon olive oil4 garlic cloves, minced2 tablespoons minced fresh oregano or 2 teaspoons dried oregano1 tablespoon minced fresh marjoram or 1 teaspoon dried marjoram2 teaspoons sugar1-1/4 pounds beef top sirloin steak, cut into 1-inch cubes3 medium zucchini, cut into 1/2-inch slices32 small fresh mushrooms1/2 teaspoon salt8 cherry tomatoes

Preparation

In a small bowl, combine the first 7 ingredients. Pour 2/3 cup marinade into a large bowl; add the beef. Turn to coat; cover and refrigerate for 4 hours. Cover and refrigerate remaining marinade for basting.

Drain and discard marinade from beef. On four metal or soaked wooden skewers, alternately thread the beef, zucchini and mushrooms. Spoon over uncooked kabobs with reserved marinade; sprinkle with salt. Broil 4 in. from heat for 5 minutes on each side or until meat reaches desired doneness, basting frequently with reserved marinade. Place a tomato on each skewer before serving.