Preheat oven to 350 degrees F
Lightly grease a miniature muffin tin
Cream sugar and butter together, then beat in egg and vanilla.
In separate bowl combine flour, baking powder, and salt.
Add the wet and dry ingredients together.
Roll dough into balls (about 18)
Press into the muffin tin, use your thumb or a spoon to press the center so the dough goes up the sides.
Bake for 8-10 minutes, until the tops are slightly brown.
Remove and using a spoon, press the centers down to form a cavity.
Allow to cool for a few minutes, then remove by twisting cups out of tin.