Preheat your oven to 350 F and place parchment paper on your cookie sheets.
In a medium bowl, whisk together the flour, baking powder, and salt.
With your electric mixer and paddle attachment, beat the softened butter until light and fluffy.
Add the sugar and beat until light, about 2-3 minutes.
Add each egg one at a time, mixing well after each one.
Mix in the vanilla.
On low, add the flour in batches until everything is combined.
Fold in chocolate chips and smarties.
Cover the dough and let chill for one hour before baking.
When the dough is finished chilling, using a cookie scoop, scoop the dough (about ¼ cup size) and roll into balls. Flatten each ball slightly and place on parchment 2 inches apart.
Bake for 10-12 minutes. Do not over bake. There shouldn’t be any browning.
Once finished baking, transfer to a wire rack to cool.
Get crazy decorating!