Best Fudgy Chocolate Crinkle Cookies

Bahan-bahan (20 porsi)

• 1/2 cup unsweetened cocoa powder
• 1 cup white granulated sugar
• 1/4 cup vegetable oil
• 2 large eggs
• 2 teaspoons pure vanilla extract
• 1 cup all purpose ( or plain flour)
• 1 teaspoon baking powder
• 1/2 teaspoon salt
• 1/4 cup confectioner's sugar (or icing sugar, for coating)