Prepare the crust by creaming together the cream cheese and butter until light and fluffy, add the flour and mix well.
Flatten the dough into a disc and wrap with plastic wrap then chill in the fridge for at least 1 hour.
Preheat the oven to 350°F (180°C), or 160°C if using a fan oven.
Divide the dough into 24 equal portions (about a tablespoon each) then place into a mini muffin tin and press down into the center and up the sides to create a mini tart shell. Chill in the fridge while you prepare the filling.
In a medium bowl, whisk together the brown sugar, egg, melted butter, light corn syrup, vanilla, salt and cinnamon until smooth. Stir in the chopped pecans until evenly distributed.
Fill the crust about halfway with the filling, being careful to not overfill.
Bake in the preheated oven for 12-15 minutes or until the crust is golden brown and the filling is bubbling
Allow to cool completely before removing from the pan
Notes
Let your ingredients come to room temperature. In order to get a creamy, smooth crust mixture, the cream cheese and butter must be very soft.
Finely chop the nuts: Since these pecan tassies are small, we want the nuts to be chopped fairly small as well.
Don't overfill the tassies: They'll still taste wonderful if they're filled too much, but the filling will overflow and stick to the pan, so they'll be difficult to remove. Try to only fill the dough a bit more than halfway.
Corn syrup is optional: This ingredient makes the filling extra soft and gooey. If you skip it, the filling will be firmer.
I'm using a non-stick mini muffin tin for these, but if your pan isn't non-stick, you will want to grease the cavities with oil or shortening.
Store: Keep in an airtight container at room temperature for up to 4 days, or freeze for up to 2 months.