Drain and rinse 1 can chickpeas.
Peel and crush 3 cloves garlic.
In a food processor, combine the drained chickpeas, crushed garlic, 2 tablespoons tahini, 2 teaspoons lemon juice, 1/4 teaspoon oregano, 2 teaspoons olive oil, 1/2 teaspoon salt, and 1/4 teaspoon black pepper.
Process until smooth, stopping to scrape down the sides of the bowl as needed and processing again until you reach a paste-like consistency.
Taste and, if desired, adjust salt or pepper to your preference using the amounts listed.
Transfer the hummus to a serving bowl.
Serve topped with a drizzle of olive oil and garnish with finely chopped onions and fresh parsley and/or fresh cilantro.