Prep: Preheat the oven to 375°F and line two baking sheets with parchment paper or silicon mats; set them aside.
Cookie dough: In the bowl of an electric mixer, beat the butter and shortening for 2 minutes. Add the brown sugar, malt powder, and chocolate syrup. Beat the mixture for another 2 minutes.
Add in the vanilla extract and egg, beat for another 2 minutes until combined.
After that add in the flour, baking soda, and salt. Mix again until just combined.
Proceed to stir in ½ cup each of the chocolate chunks and chocolate chips.
Scoop the dough into 2" balls and place them 3" apart on prepared baking sheets. Top the dough with the remaining chocolate chunks and chocolate chips.
Bake: Place the cookies in the preheated oven and bake for 9-10 minutes. Remove from oven and let them sit for 2 minutes on pan before transferring to a cooling rack. Serve the cookies slighting warm and enjoy!
Notes
These malted cookies should be stored in an airtight container, at room temperature, and they will stay fresh for up to 5 days.For longer storage, place them in an airtight container or freezer bag and freeze for up to 3 months. Thaw at room temperature before serving.