for Crostini:1/2 inch thick slices whole grain baguette or ciabatta bread. 1/3 cup olive oil for the Pesto sauce: Pulse together the peas, garlic, parmesan, 1tsp of salt and 1/4tsp of pepper in a food processor. Then add the olive oil until well combined, about 1 to 2 minutes. Add salt'N'pepper if needed. Transfer to a small bowl and set aside. for the crostini: preheat grill pan on medium high-heat. Brush both sides of the sliced bread with olive oil and grill until golden for about 2 minutes. Transfer the bread to a clean surface and spread 2tablespoon of the prepared pesto sauce on each slice. Top with slice tomato and serve.