Falafel Veggie Burger with Feta Yogurt Sau

Name: Falafel Veggie Burger with Feta Yogurt Sau
Ingredients: * 2 (15 ounce) can low sodium garbanzo bean, drained; * 1/3 cup tahini; * 1/3 cup chopped fresh cilantro; * 1/3 cup sliced green onion; * 1 cup packed fresh spinach; * 1/2 cup chopped roasted red pepper; * 2 garlic clove minced; * 1 cup panko; * 1 large egg; * 2 tablespoon olive oil; * 2 tablespoon fresh lemon juice; * 1 teaspoon cumin; * 1/2 teaspoon coriander; * 1 1/2 teaspoon kosher salt; for the fete yogurt sauce; * 1/2 cup crumbed feta cheese; * 1/2 cup plain greek yogurt; * 1 small garlic clove, minced; * 1 tablespoon lemon juice