Slice bread loaf into 1-inch thick slices. Brush each slice on one side with olive oil. Broil, oil side up, until barely golden. Remove from broiler pan and cool.
In a medium bowl, mix together roasted pepper, garlic, tomato, basil and onion. Sprinkle evenly on each toast slice. Sprinkle with Feta cheese; then drizzle with balsamic vinegar. Serve immediately. Makes 12 servings. Enjoy!