1-1/2 cups flour
1 tablespoon sugar
1/2 teaspoon salt
1/4 teaspoon baking powder
1/3 cup canola oil
1 teaspoon cider vinegar
2 to 4 tablespoons cold water

In a bowl, combine the flour, sugar, salt and baking powder.  Stir in oil and vinegar.  Gradually add water, tossing with a fork until a ball forms.  Shape into a 6-in. circle.  Roll out between two pieces of plastic wrap to fit a 9-in. pie plate.  Remove top piece of plastic wrap; invert pastry into a 9-in. pie plate coated with nonstick cooking spray.  Remove remaining plastic wrap.  Trim pastry to 1/2 in. beyond edge of plate; flute edges.