01 - Heat the vegetable oil in a large skillet over medium heat. Add the sliced onions along with green bell pepper and jalapeño if using. Sauté for 8-10 minutes until soft and golden brown. Season generously with salt and black pepper. Keep warm on low heat.
02 - Preheat a grill or grill pan to medium-high heat. Place the beef hot dog sausages on the grill, turning them occasionally to ensure even browning. Cook for 6-8 minutes until fully heated through and develop attractive grill marks.
03 - Place the hot dog buns on the grill for 1-2 minutes, cut side down, until lightly toasted and warmed through. This creates a pleasant texture and prevents sogginess from the toppings.
04 - Spread a generous layer of softened cream cheese evenly along the inside of each toasted bun, ensuring full coverage from end to end.
05 - Place each grilled sausage into the prepared buns, positioning it directly on top of the cream cheese layer.
06 - Top each hot dog generously with the warm sautéed onions and any optional peppers or jalapeños you prepared.
07 - Complete your Seattle-style hot dogs with ketchup, mustard, sriracha, relish, or sauerkraut according to personal preference.
08 - Arrange the hot dogs on a serving platter or individual plates and serve while hot for the best experience.