Heat a skillet over medium heat. Add the ground beef and finely chopped onion. Cook until browned and onion is softened, about 6–8 minutes.

Stir in the garlic powder, salt, and black pepper. Cook for an additional 30 seconds.

Drain any excess fat from the skillet for a lighter filling.

Reduce heat to low and sprinkle cheddar cheese over the mixture. Stir until melted and fully combined, about 2–3 minutes.

Incorporate chopped pickles, ketchup, and mustard into the mixture. Stir until well-distributed.

Lay tortilla wraps flat. Spoon cheeseburger filling into the center, fold sides inward, and roll tightly.

Heat butter or oil in the skillet over medium-high heat. Toast wraps seam-side down for 2–3 minutes on each side until golden.

Remove wraps from the skillet and let cool slightly before slicing in half or serving whole.