- Take a tissue paper and press it over the chopped tomatoes. Ensure that all the liquid from the tomatoes is absorbed. 
- In a mixing bowl add tomato, onion, basil leaves, olive oil, pepper powder and salt. 
- Refrigerate the onion and tomato mixture for 20 minutes. 
- Slice the bread diagonally into 1/2-inch-thick slices. 
- Apply butter on both sides of bread slices. 
- Heat a frying pan and toast the slices till they turn brownish. 
- Once the slices cool, arrange them on a plate. 
- Top the toasted slices with 1-2 tablespoon mint mayo. 
- Top this with 2 tablespoon of onion tomato mixture and serve.