Ultimate Chocolate Chip Butter Cookies
Ingredients:
Butter: 200 g (about 1 cup)
Vegetable oil: 100 ml (about 1/2 cup)
Egg: 1 large
Baking powder: 10 g (2 tsp)
Vanilla sugar: 10 g (1 tbsp)
Cornstarch (or starch): 200 ml (about 3/4 cup)
Powdered sugar: 200 g (about 1 1/2 cups)
