1) Preheat the oven to 200 degrees C.
2) Place the beans, garlic, lemon juice, 4 tbsps olive oil, and parsley in the bowl of a food processor. Pulse until the mixture is coarsely chopped. Season with salt and pepper, to taste. Transfer the bean puree to a small bowl.
3) Cut each pitta in half and then into 8 wedges. Arrange the pita wedges on a large baking sheet. Pour the remaining oil over the pitas. Toss and spread out the wedges evenly. Sprinkle with the oregano, salt, and pepper. Bake for 8 to 12 minutes, or until toasted and golden in color.
4) Serve the pita toasts warm or at room temperature alongside the bean puree.