300 grams frozen peas, thawed
1 garlic clove
1/2 cup grated Parmesan cheese
1 teaspoon salt
1/4 teaspoon cayenne pepper
1/3 cup olive oil
1 baguette, cut into 1 cm slices
1 small tomato, diced
For the pea pesto: Pulse together in a food processor the peas, garlic, Parmesan cheese, salt, and pepper. With the machine running, slowly add 1/3 cup of the olive oil and continue to mix until well combined, Transfer to a small bowl and set aside.
For the crostini: Preheat a stovetop griddle or grill pan over medium-high. Brush both sides of each of the bread slices with the remaining 1/3 cup olive oil and grill until golden, 1 to 2 minutes. Transfer the bread to a platter and spread 1 to 2 tablespoons pesto on each slice. Top each crostini with tomato and serve.