01 -
With a stand mixer for 5 mins (7 with a hand mixer), whip together butter, cream cheese, both sugars, vanilla, and egg until it’s airy.
02 -
Slowly stir in flour, salt, cornstarch, and baking soda. Don't overdo it—just enough, about a minute.
03 -
Toss in chocolate chunks or chips and gently mix it all together.
04 -
Form 2-inch balls, flatten slightly, and cool in the fridge for at least 2 hours—or up to 5 days.
05 -
Put in a 350°F oven for 8-9 mins. Edges should be set, but the middle will still look a bit soft. Let them cool on the baking tray for 5 mins.