I grew up eating a version of this Carne Asada Quesadilla recipe at my Abuelita’s house, and it’s still one of my favorite meals ever! Crispy tortillas filled with the most irresistible marinated flank steak, black beans, and lots of melty cheese for the ultimate comfort food. Paired with a creamy, sweet, spicy dipping sauce, every bite is SO comforting, and a single serving has 55 grams of protein!