Double check what is reported on your 1040 form by following the steps below to preview your 1040 form before filing. If the interest is reported twice on your return, then double check that you do not have two 1099-INT forms entered by mistake. If so, you can delete one of them.
https://ttlc.intuit.com/replies/3302322
If you still are encountering the double interest amount, please use the link below to contact TurboTax product support: