In a double boiler, add the 2 cups chocolate chips and stir until melted and smooth.
Place the melted chocolate into a small metal bowl.
Whisk flour, cocoa powder, baking powder, and salt in a medium bowl.
Set aside.
Using an electric mixer, beat butter in large bowl until creamy.
Add sugar and vanilla extract and beat until smooth.
Add eggs; beat until well incorporated.
Add in the melted chocolate.
Add dry ingredients and mix until well blended.
Stir in remaining 1/2 cup chocolate chips and the Andes chocolate.
Preheat oven to 350 degrees.
Scoop out tablespoons full of dough and form a round ball.
Place onto the cookie sheet that was lined with parchment paper.
Bake cookies for 8 to 9 minutes.
Cool cookies on the baking sheet for 5 minutes.
Transfer cookies to racks to cool completely.