In large bowl, combine ground beef (or ground chuck), egg, Liquid Smoke, black pepper, salt, onion powder, garlic powder (if using) and crushed Ritz crackers.
Use large spoon or hand mix until evenly combined. Set aside.
Prepare burgers in preferred size. I used about 1/3 cup of mixture to make a burger (6 total). Set burgers aside.
Spray large skillet with vegetable oil cooking spray.
Or drizzle with 2-1/2 tablespoons of vegetable oil.
Warm over low-medium heat until sizzling hot.
Place onion rings in a single layer over bottom of hot skillet. Place patties on top. Sides not touching.
Cook 3 to 5 minutes on each side (well done). Or cook as preferred (pink inside).
Remove hamburgers and onions. Drain on a paper towel.