Beat butter, shortening and two sugars until fluffy.
Add cinnamon, eggs and vanilla.
Beat well.
On low, add flour, kosher salt and baking powder to make a dough.
Scoop cookies onto parchment using a cookie scoop.
Use a small tool to indent the centers. I use a tart tool.
Sprinkle on a lot of crumb topping to each, pushing gently so it adheres.
Bake 11-13 minutes.
Cool and sprinkle on lots of powdered sugar!