Build the Aromatic Base: In the bowl of your food processor, combine the garlic cloves, fresh lemon juice, and lemon zest. Pulse several times until the garlic is finely minced.
Purée for Creaminess: Add the thoroughly rinsed and drained cannellini beans to the food processor. Secure the lid and process on high for 60-90 seconds, scraping down the sides with a spatula as needed, until the beans are transformed into a completely smooth and velvety purée.
Incorporate Tang & Richness: Add the non-fat Greek yogurt and black pepper to the bean purée. Blend for another 30 seconds until the mixture is uniform, light, and airy.
Crumble in the Feta: Add the crumbled feta cheese to the processor. Pulse 5-7 times for a slightly rustic texture, or process for 20-30 seconds for a perfectly silky-smooth consistency.
Infuse with Fresh Herbs: Add the chopped fresh dill and oregano to the dip. Pulse just 2-3 times—enough to evenly distribute the herbs without turning the dip green.
Final Emulsification: With the food processor running on low, slowly stream in the 1 ½ tablespoons of extra-virgin olive oil. This will create a stable, rich emulsion.
Plate and Finish: Transfer the dip to a shallow serving bowl. Use the back of a spoon to create an elegant swirl on top. Drizzle generously with extra-virgin olive oil and garnish with a sprinkle of sumac (or Aleppo pepper) and fresh parsley before serving.