Ingredients

2 ripe avocados, pitted

1 teaspoon garlic salt

2 pounds ground chuck beef

6 scallions, white and light green parts only, finely chopped

2 tablespoons ground barbecue seasoning mix

3 tablespoons Worcestershire sauce

Prepared barbecue sauce, for brushing

4 hamburger buns, split

Unsalted butter, for buns, if desired

Lettuce, for serving (optional)

Sliced tomatoes, for serving (optional)

Preparation

In a large bowl, mash together avocado and garlic salt; set aside.

In another large bowl, mix together ground beef, scallions, barbecue seasoning, and Worcestershire sauce. Gently form into four 1-inch-thick patties.

Preheat a grill or grill pan. Grill meat, turning every 3 to 4 minutes. Brush meat with barbecue sauce during the last 3 minutes of cooking. Cook meat until no longer pink, about 15 minutes total.

Butter hamburger buns, if desired, and place on grill until toasted. Spread buns with avocado mixture. Place burgers on buns and top with lettuce and tomato, if desired. Serve immediately.