Preheat oven to 350 degrees
Brush each slice with a little olive oil and place olive oil side up on cookie sheet
Toast bread slices for approx 5 minutes. To speed up the process you can us the broiler, but that will only take a minute, watch so they don't burn!
Leave slices on a cookie sheet and spread with enough pesto to cover the top of the bread slice . If you like pesto spread it on a little thicker. Top with diced tomatoes
Sprinkle with a little Parmesan cheese
Place back in the oven for a few minutes if preferred or serve immediately
Enjoy!