Take butter in a pan,add onions, saute, when translucent, add capsicums, saute for 2 mins, add pepper powder and salt, mix well.
Add baked beans with the sauce, braise for 5 mins.
Slice buns into two, (you can spread butter on it ) take the lower part and put around 2 tbsps of beans mixture,spread it ,sprinkle 1 tbsp of cheese(you can add more if you want to), and oregano on it.
Place slice of tomato and keep it under grill or toaster,as soon the cheese starts melting, cover it with other part of bun, and toast.
Finish the remaining buns same way and serve hot .
IF ADULTS ARE EATING THEN YOU CAN ADD FINELY CHOPPED RED OR GREEN CHILLIES ON CHEESE.