Cut potatoes in half lengthwise.
Using the pointed end of a bottle opener, apple corer, vegetable peeler or the end of a table knife, carefully carve your initials, numbers or other designs in the rounded sides of the potatoes (ask an adult to help).
Put 1 tablespoon butter or margaring into a 8 inch round microwavable dish.
Sprinle the flat sides of the potatoes with 1/4 teaspoon garlic salt.
Put potatoes with the flat sides down in a circle in the melted margarine.
Let stand uncovered 5 minutes before serving.