Grate or finely mince the onion. In a large bowl, combine the onion with all the spices, baking soda, BBQ sauce, and ground beef. Mix just until combined—avoid overworking the meat, as this can lead to dense burgers.
Divide the meat into four equal portions. For uniform patties, use a kitchen scale. To shape the burgers, gently press each portion into a Pyrex bowl lid or burger press, then invert onto a plate. Repeat with the remaining portions.
Cook the patties over medium-high heat on a grill or in a cast iron skillet for 3–4 minutes per side, or until they reach your preferred doneness. Avoid pressing down on the patties while cooking—this squeezes out the juices. Also, try to flip them only once for the best texture and moisture.Tip: If using a skillet, add 2 teaspoons of avocado oil to prevent sticking and withstand high heat.
While the burgers rest, toast your buns if using. Toasting not only adds crunch but also helps them hold up to juicy toppings. Prefer a low-carb option? Wrap your burger in crisp green leaf lettuce instead.
Assemble your burgers with your favorite gourmet toppings. We love ours with grilled onions, lettuce, tomato, pickles, and a slice of provolone cheese. Enjoy!