You should have received a 1099-INT from the bank.
Does the receipt tell you how much of the proceeds was due to the interest? i.e., does it tell you how much of it was interest?
Normally savings bond interest is reported in Box 3 of a 1099-INT. Does the receipt mention Box 3? When you expand the number of boxes on that screen, you should see Box 3.
You may have to ask the bank if you were supposed to receive a 1099-INT. Or does your receipt say that it is a "Substitute 1099-INT?"
