Arrange bread slices in a single layer on a baking sheet. Broil 2 minutes or until tops are toasted. Remove from oven. Turn the slices over; set aside on baking sheet.
Combine egg substitute, basil, milk, salt, pepper, and egg, stirring with a whisk.
Heat a large nonstick skillet over medium-high heat. Add garlic and pancetta; sauté 3 minutes or until pancetta begins to crisp. Add egg mixture to pan; cook 2 minutes or just until set, stirring gently.
Divide egg mixture evenly over bread slices. Top egg mixture with tomatoes, and sprinkle with cheese. Broil 2 minutes or until the cheese melts and begins to brown. Serve immediately.