Preheat the oven to 350. Combine the shortening, butter, and brown sugar in a large bowl or stand mixer. Mix for 3 minutes until combined and fluffier.
Add eggs and maple syrup and mix until combined.
Add flour, cornstarch, baking soda, and salt. Mix until just combined. Your dough should be soft, but not sticky. If it is sticky, add 1 tbsp at a time until it is no longer sticky.
Using a large cookie scoop, scoop out the dough and roll it in your hands. Smash the dough slightly into a cylinder shape. Using a skewer or something similar, make 4 lines on each dough ball for the waffle look.
Bake the cookies at 350 for 9-10 minutes. Let them cool completely while you make the frosting.
For the frosting add the butter to a bowl and whip with a stand or hand mixer for 3 minutes. Add the powdered sugar and vanilla and whip another 3 minutes. Using a small cookie scoop, scoop the about 1 tbsp of frosting onto each cookie.
When serving, drizzle with maple syrup! Enjoy!