Start by placing the ground chuck in a large bowl. Season it generously with kosher salt and freshly ground black pepper. Use your hands to gently mix the meat and seasoning, being careful not to overwork it. Divide the mixture into four equal portions and shape them into patties, making a slight indentation in the center of each patty to help them cook evenly.
Preheat your grill or skillet over medium-high heat. Add the canola oil to the skillet if you're using one, allowing it to heat up until shimmering. If you're grilling, don't add oil; the natural fat from the chuck will keep the burgers from sticking.
Place the burger patties on the grill or skillet. Cook for about 4-5 minutes on one side without moving them. This helps to create a beautiful sear. Flip the burgers and place a slice of American cheese on each patty. Cook for an additional 4-5 minutes, or until the internal temperature reaches 160°F for medium doneness.
During the last minute of cooking, place the split hamburger buns on the grill or in the skillet to toast them lightly. This adds a wonderful crunch and prevents them from becoming soggy once the burger is assembled.
Once the burgers are cooked and the cheese is melted, it’s time to assemble. Start with the bottom bun, add a generous layer of lettuce, followed by the burger patty with melted cheese. Top with slices of pastrami, fresh tomato, and crispy onion rings. Finish with the top bun.
Heat the BUSHS Southern Style Baked Beans in a small saucepan over medium heat until warmed through. Serve alongside your Southern BBQ Burger for a classic Southern experience.