Combine ice cream ingredients with a whisk and chill.
Put pecans in a dry skillet over medium heat and toast, stirring, about 5 minutes.
Add the syrup and cook, stirring, another 3 minutes until the syrup begins to “dry”.
Sprinkle with cinnamon and remove from heat.
Once the yogurt mix is thoroughly chilled (At least one hour, and up to 2 days) freeze it in your ice cream dealie as per your manufacturer’s instructions. Frozen yogurt probably will freeze quicker than ice cream, so check it a little sooner than normal.
Serve topped with maple pecans right away for a soft-serve texture (I think it’s the best!) or pack into an airtight container and freeze for an hour for a firmer, scoopable texture.