1In a food processor,combine the vegetables,olives,pepperoni,tomato paste,and seasonings and pulse just until blended.
2Transfer to a large bowl;stir in bread crumbs.
crumble beef over mixture and mix well.
Shape into 4 patties.
3Coat grill rack with cooking spray before starting the grill.
Grill burgers over medium heat for 5to7 minutes on each side or until a meat thermometer reads 160 and juices run clear.
Serve on buns with cheese and pizza sauce.
Add toppings if desired.