You can enter the interest income like any other bank income-
You can enter in the Interest on 1099-INT section.
1. On the screen Let's import your tax info, select Enter another way
2. Next it will say OK, let's start with one investment type select Interest and Continue.
3. Next, you will see How would you like to upload your 1099-INT? choose Type it in myself
4. You can enter your interest on the next page.