• To a large mixing bowl, add ground beef, hamburger seasoning, seasoned salt, and garlic powder. Mix until just combined.
• Divide the ground beef mixture into four equal portions (4 ounces). Shape each portion into a thin patty, about 5 inches in diameter, or slightly larger than the hamburger buns to allow for shrinkage during cooking. Press a shallow indentation in the center of each patty to prevent bulging.
• Preheat a skillet over medium-high heat.*
• Cook the patties for about 4-5 minutes per side, or until desired doneness is reached. For medium-done burgers, the internal temperature should be 145°F-150°F. For medium-well, cook to 150°F-165°F.
• Just before removing the burgers from the heat, place a slice of cheddar cheese on each patty to melt.
• While the burgers are cooking, lightly toast the hamburger buns in a separate pan or in the oven.

Assembly

• Spread a generous amount of cowboy butter on the bottom half of each toasted bun.
• Top with a tomato slice, 2 cheeseburger patties, 3 onion rings, half of the crumbled bacon, and jalapeno slices. Drizzle with barbecue sauce.
• Add any garnishes you desire. Top with a bun and serve warm.