You can file form M1PR either through TurboTax or directly through the state's website. Note that the efiling process does not support this form, so you have to print and mail it, even if you efile.
For more information, please see https://ttlc.intuit.com/community/filing-and-paying-taxes/help/can-i-file-my-m1pr-minnesota-property... - oops, please note that the link in the answer for Property Tax Refund no longer works; instead, try https://www.mndor.state.mn.us/tp/propertytaxrefund/_/
