INGREDIENTS
1 medium
onion
1/2 cup
ketchup
1/3 cup
cider vinegar
1/4 cup
brown sugar
1/4 cup
tomato paste
2 tbsp
sweet paprika
2 tbsp
worcestershire sauce
3 tsp
kosher salt
1 1/4 tsp
pepper
8
chicken thighs
6
hamburger buns
1
guacamole
1 cup
colby jack cheese