Chop the cherry tomatoes into small pieces (each one into 4-6 pieces). Finely chop the yellow onion, fresh garlic cloves and fresh basil.
Add the chopped cherry tomatoes, onion, garlic, fresh basil and the rest of the ingredients for the tomato topping to a large bowl, mix well with a spoon, put a lid on, and leave this tomato mixture in the fridge for 2-5 hours.
When you are almost ready to eat it is time to take the tomato topping out of the fridge and toast the bread.
Take the tomato topping out of the fridge and leave it in the bowl in room temperature.
Preheat your oven to 200 degrees Celcius (392 Fahrenheit), fan bake setting.
Take a baking sheet and cover it with parchment paper.
Slice 6 rather thick slices of bread (about 3-4 centimeters), spread the slices out on the baking sheet with the parchment paper and smear a little olive oil on one side of each slice of bread (1-2 tbsp in total), and leave oil-side up.
Bake the bread in the oven for approximately 5 minutes. Flip the breads and bake for another 2 minutes.
Place the baked and crispy bread on a trey with the olive oil side facing up. Use a sieve to drain off the excess fluids from your bruschetta topping, then top each slice of bread with a generous amount of the topping. You drain off the excess fluids to avoig your bread from getting soggy and wet. Garnish with creamy balsamico and fresh basil leaves, and sprinkle a pinch of sea salt and freshly ground pepper over your homemade bruschetta.