Question

bread and butter_________ his favourite meal.​

Answer 1

Answer:

ARE

Explanation:

Bread and butter are his favorite meal.

Answer 2

Answer:

Bread and butter is his favourite meal.

are and is both can be used.

If you're referring to bread and butter as two separate things, you need "are".

If you mean bread which has butter spread on it, then you need "is".

hope it helps you...