Add 1 pound lean ground beef, 4 teaspoons garlic powder, and ½ teaspoon salt to medium mixing bowl. Use hands or wooden spoon to mix ingredients together until well combined. Set bowl aside.

Heat large skillet over medium heat. When pan is warm, add 1 teaspoon avocado oil and swirl or tilt pan to distribute oil across surface. Continue heating pan until oil is hot and shimmery.

When oil is ready, add ground beef mixture to skillet. Cook beef, stirring frequently, until browned and crumbled. While ground beef cooks, prepare guacamole and special sauce.

Add ½ cup mayonnaise, 2 tablespoons ketchup, 2 teaspoons pure maple syrup (see Notes), 1 tablespoon dill pickle relish, 2 teaspoons dried minced onion, 1 pinch crushed red pepper flakes, and 1 pinch salt to second medium mixing bowl.

Whisk ingredients together until fully combined. Taste and adjust quantities as needed. When satisfied with flavor, set sauce aside until ready to serve.

Add 2 medium avocados, ½ tablespoon fresh lemon juice, and ½ teaspoon salt to small mixing bowl. Use fork to mash ingredients together until fully combined. When desired consistency is achieved, set bowl aside until ready to serve guacamole.

When ground beef is fully cooked and crumbled, transfer beef to medium bowl or plate and set aside. Return skillet to medium heat.

Add 1 cup thinly sliced red onion to skillet in single layer. Work in batches as needed to avoid layering onions or overcrowding pan. Cook onion slices until lightly charred on underside, then flip onions over and cook until charred on other side.

Transfer sautéed red onions to second medium bowl or plate and set aside. Repeat with any remaining onions until all onions have been sautéed.

Divide 2 small heads romaine lettuce evenly between serving bowls.

Divide ground beef mixture into 4 equal portions. Place one portion in center of each serving bowl, on top of lettuce layer.

Arrange equal portions of 1 ½ cups cherry tomatoes, ½ cup pickle chips, 8-10 slices thick-cut bacon, sautéed red onions, prepared guacamole, and other preferred toppings around ground beef in each bowl.

Drizzle plenty of special sauce over top of burger bowls and serve immediately with additional sauce if desired.