In mixer with paddle attachment, add 1/2 c butter, 3/4 c  sugar and beat. Add an egg and 1.5 t vanilla extract,. Mix in 1 3/4 c flour, 1/2 t baking powder  and 1/4 t salt.

Scoop batter into baking pan,  and press flat with your fingers. Bake at 350 for 20 minutes, or until  a toothpick inserted comes out mostly clean.  Let cool completely.

Beat 4 TB butter and  3 oz cream cheese until fluffy.  Add 3/4 t vanilla and mix. Add 2 c powdered sugar


Spread the frosting over the  cooled cookie, decorate with candy, and then slice to serve.