Chocolate Snowflake Cookies (Chocolate Crinkles / Crackles)

Combine sugar, oil, and melted chocolate in a large mixing bowl; beat at medium speed of an electric mixer until blended.
Add eggs and vanilla, mixing well.
Combine flour, baking powder and salt in a medium bowl.
Add about one-fourth of dry mixture at a time to chocolate mixture, mixing after each addition.
Cover and let chill at least 2 hours.
Shape dough into 1-inch balls, and roll in powdered sugar.
Place cookies 2 inches apart on lightly greased cookie sheets.
Bake at 350 degrees F.
for 10 to 12 minutes.
Cool on wire racks.