Mix oil, chocolate and granulated sugar. Blend in one egg at a time until well mixed. Add vanilla. Mix flour, baking powder and salt together and add to the oil mixture. Chill overnight.
Heat oven to 350 degrees. Drop teaspoons full of dough into powered sugar. Roll in sugar and shape into balls.Place about 2 inches apart on a cookie sheet sprayed with cooking spray. Bake 10 -12 minutes, Do NOT overbake! Makes about 6 dozen cookies.