First in pan take oil and add onions,capsicum and salt cook for only 5 minutes don't overcook it

Spread pizza sauce on one slice of bread and then spread the cooked onion and capsicum on the slice and put olives,oregano,black pepper cheese on the slice and then place the second bread slice on it

Spread butter on both the sides and place the bread slices on a pan or tava and cook both the sides of bread pizza sandwich is ready to serve (u can also add any veggie toppings as available)