Mix butter and sugars until well blended add egg and mix thoroughly. Add in vanilla, salt, baking powder and soda blend in well. Add in flour stir until all flour is incorporated into batter.
Spray mini muffin tins with baking spray and fill each cup with about a table spoon of batter. Bake in 350 degree oven for 12-15 minutes or until top of cookie is golden brow.
Remove from oven and drop one candy on top of each cookie cup and let cool. When cool gently press candy into cookie just a bit. Drizzle with melted chocolate if desired.