01 - Heat olive oil in a large skillet over medium-high heat. Add the thinly sliced beef, salt, black pepper, and smoked paprika. Sauté for 2 minutes, tossing to coat evenly.
02 - Add brown sugar (or honey), soy sauce, minced garlic, and sliced red onion to the skillet. Cook, stirring frequently, until the beef is browned and the onions are softened, about 4-5 minutes. Remove from heat and set aside.
03 - Wipe the skillet clean and place it over medium heat. Lay one flour tortilla flat in the skillet. Sprinkle half of the mozzarella and cheddar blend evenly over one half of the tortilla.
04 - Distribute the beef mixture, sliced red bell pepper, and corn kernels over the cheese. Fold the empty half of the tortilla over the filling, pressing gently to enclose.
05 - Cook the quesadilla for 2-3 minutes per side, pressing down lightly with a spatula, until the exterior is golden brown and the cheese is fully melted.
06 - Remove the finished quesadilla and set aside. Repeat the assembly and cooking process with the remaining tortillas and fillings.
07 - Cut each quesadilla into wedges. Serve warm accompanied by sour cream, chopped fresh cilantro, and lime wedges if desired.