In a large bowl or base of a stand mixer, cream butter and granulated sugar until smooth. Add eggs, one at a time. Beat well after each egg. Add vanilla and beat until batter is smooth.
In a microwave safe bowl, place 1 cup chocolate chips. Heat on high in microwave for 30 seconds. Stir well. Put back in microwave for another 30 seconds. Remove, and stir until chocolate is smooth. (You can also melt chocolate chips in saucepan over low heat). Add melted chocolate to batter mixture. Continue beating until smooth.
In separate bowl, whisk together flour, baking powder and salt. Add this to batter, in small increments, until flour is fully incorporated. Stir in remaining 1 cup of chocolate chips. Mix dough well. Set dough in refrigerator for 10 minutes (to slightly firm up).
Roll cookie dough into 1 1/2 inch balls. Place dough balls on a greased cookie sheet, about 1 inch apart. Bake at 350 degrees for 10-12 minutes, or until edges are firm. The centers may still be a bit soft, but that's okay. Remove cookies from oven. Let them stay on cookie sheets and cool for about 5 minutes before attempting to remove them. Place cookies on wire racks to cool completely. Using a sieve or sifter, sift powdered sugar over the top of cooled cookies. Serve, and enjoy!
Chocolate Crinkle Cookies https://www.thegratefulgirlcooks.com/chocolate-crinkle-cookies/