Pecan Pie Layer Cake

Gradually add half of the powdered sugar, mixing until well combined.
Add vanilla extract, cinnamon, and 3-4 tablespoons of water or milk, mixing until smooth.
Gradually add remaining powdered sugar, mixing until combined.
Adjust consistency with additional water or milk as needed.
Level cake layers, then place one layer on a serving plate. Pipe a dam of frosting around the edge.
Spread 1/3 of the pecan pie filling inside the dam, then smooth out the frosting.
Repeat layering with remaining cake layers and filling.
Frost the outside of the cake, then pipe a border around the top edge.
Fill border with remaining pecan pie filling and decorate with pecan halves.
Refrigerate cake until ready to serve.
Enjoy the irresistible combination of flavors in this Pecan Pie Layer Cake!