Preheat your oven to 350°F (175°C). In a large bowl, combine cold, cubed unsalted butter, powdered sugar, and all-purpose flour. Blend until it resembles pea-sized crumbs. Press mixture into greased 9x13" baking pan. Bake for 12 minutes or until edges are lightly golden.

Once the crust is baked and has cooled slightly, sprinkle dark chocolate chips, dried cranberries, shredded coconut, and chopped pecans over the warm crust. Carefully pour sweetened condensed milk over the toppings.

Return the pan to the oven and bake for an additional 18 minutes until filling is bubbly and lightly golden.

Let the bars cool completely in the pan on a wire rack before cutting into squares.