These soft and chewy chocolate cookie bars are any chocolate-lover's dream! Loaded with three kinds of chocolate to satisfy even the biggest sweet tooth.
Preheat oven to 350F. Line a 9x13 baking pan with tin foil and lightly grease. Set aside.
In a large bowl, beat butter and sugar until evenly creamed. Beat in egg, vanilla, and cooled melted chocolate until smooth.
In a separate bowl, combine flour, baking soda, and salt. Beat flour mixture into liquid until a cookie dough forms (dough will be slightly sticky)
With greased hands, pat dough evenly into prepared pan. Prick cookie dough with a fork and bake at 350F 18-20 minutes (middle will still be slightly soft---this is ok)
Cool bars on a wire cooling rack completely. Once cooled, use foil to remove bars from pan. Drizzle bars evenly with melted semisweet and white chocolate. Allow to set 10 minutes then slice bars into squares. Enjoy!
Notes
Store bars in an airtight container at room temperature up to 3 days.