Preheat oven to 350°.
Pulse all ingredients in food processor until a soft dough ball is formed.
Transfer to a cold glass bowl, cover with a wet towel, and let it rest in the fridge for 15–20 minutes.
Divide dough into four balls and press into four mini tart pans.
Bake 10 minutes or until lightly browned.
Remove from oven and allow to cool.