01 - Heat olive oil in a large skillet over medium-high heat. Add the sliced beef, salt, black pepper, and smoked paprika. Sauté for 2 minutes, stirring to coat evenly.
02 - Add brown sugar (or honey), soy sauce, minced garlic, and red onion to the skillet. Cook, stirring frequently, until the beef is browned and the onions are soft, 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 cheeses 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 to enclose it.
05 - Cook the quesadilla for 2-3 minutes per side, pressing gently with a spatula, until the tortilla is golden brown and the cheese is fully melted.
06 - Remove the first quesadilla and keep warm. Repeat the assembly and cooking process with the remaining tortillas, beef mixture, and cheeses.
07 - Cut each quesadilla into wedges. Serve warm alongside sour cream, chopped cilantro, and lime wedges as desired.