How to Make It
Heat a large nonstick skillet over medium-high. Add ground beef, chopped red onion, and minced garlic; cook 5 minutes, stirring to crumble. Stir in water, hoisin sauce, ketchup, Sriracha chili sauce, and salt; cook 3 minutes. Divide mixture evenly among hamburger buns; serve with red onion slices, if desired.