1 cup peeled, diced cucumber (about 1 medium) |
1 tablespoon cider vinegar |
3/4 cup fine, dry breadcrumbs |
3 tablespoons grated parmesan cheese |
2 tablespoons chopped fresh dillweed |
1/4 teaspoon freshly ground pepper |
1/8 teaspoon salt |
2 tablespoons water |
2 egg whites, lightly beaten |
10 (1/2-inch-thick) slices tomato (about 3 medium tomatoes) |
olive oil-flavored vegetable cooking spray |