To make the hummus
Add chickpeas, tahini, garlic, olive oil, lemon juice, cumin, and salt in a food processor and process until smooth. Adjust the consistency of the hummus by adding a tablespoon of water at a time until you reach the desired consistency. Hummus should be well incorporated and very smooth. Et Voila!
To make the mushrooms
Heat olive oil in a skillet over medium-high heat. Add mushrooms; sauté 5 to 10 minutes or until lightly browned. Add garlic; cook for 2 minutes. Season with salt and black pepper.
To serve
Spoon the hummus into a serving dish and top with the sautéed mushrooms. Sprinkle with chili flakes, sumac, drizzle with olive oil. Serve alongside warm pita bread or toasted baguette.