Smoky Barbecue Meat Loaf

1 red onion, cut into 1/4-inch strips 

1 bunch green onions, ends trimmed 

1 Tbs. olive oil 

Kosher salt and freshly ground pepper, to taste 

1 jar (17 oz.) meat loaf starter 

3 eggs 

1 1/4 cups fresh bread crumbs 

2 lb. LaFrieda meat loaf blend 

1/4 cup barbecue sauce