Preheat the broiler.
Brush bread with olive oil, grill on both sides, and remove. While still hot, rub each slice with a garlic clove.
In a small bowl, mix the ricotta, black pepper, and oregano and spread some of the mixture over each slice of bread. Top each with an anchovy fillet and replace onto the cookie sheet. Place under broiler until the cheese just oozes, about 1 minute, remove, place onto a serving platter, drizzle with the oil and serve.