Combine currants or raisins with apple, oil, milk and sugar in a medium mixing bowl. Stir together flour, oats, baking powder, salt, nutmeg, cinnamon and allspice in a separate bowl. Stir into raisin mixture just until combined. Divide batter equally into 12 greased or lined muffin cups. Sprinkle top of batter with 1/2 teaspoon brown sugar. Bake at 400 degrees for 20 minutes or until golden. Makes one dozen.