Preheat oven to 350°F. Line a sheet pan with parchment paper.

In a large bowl, combine ground beef, egg, panko, ¼ cup sweet soy sauce and scallions.

Form into mini meatballs (use a cookie scoop or 1 tablespoon measuring spoon to form into balls) and place on prepared baking sheet.

Bake 350°F uncovered for 15 minutes.

While meatballs are baking, combine remaining ¼ cup sweet soy sauce and sweet chili sauce.

Brush over meatballs and bake 5 minutes more.