Add chopped bacon and diced yellow onion to a large skillet over medium-high heat. Cook, stirring occasionally, until the bacon is cooked through and the onions are browned. If you prefer crispier bacon, continue cooking a little longer before adding the green beans.

Add the drained green beans directly to the skillet with the bacon and onions. Stir in brown sugar, soy sauce, Worcestershire sauce, garlic powder, and black pepper until the green beans are evenly coated. There is no need to remove the bacon or drain the skillet.

Reduce heat to medium-low, cover the skillet, and cook for 10 minutes, stirring after 5 minutes to distribute the sauce evenly. The canned green beans are already cooked, so this step heats them through and allows them to absorb the sweet and savory flavors.

Serve immediately. Give the beans one final stir, making sure the bacon and browned onions are distributed throughout. Serve hot.