Did you file your return yet? If you haven't filed you can add it. Click on Add a State to let you back into your return.
Enter a 1099-Int under
Federal Taxes tab
Wages & Income
Interest and Dividends
Interest on 1099INT - Click the Start, Revisit Or Update button
ps.....Don't enter the bank name and don't try to import it. It is just as fast and easy to manually enter it. When you enter a 1099 the first screen is How to Enter, by Import or Enter it Myself. Scroll down and click the last circle to enter it myself.