Preheat the oven to 350°F (175°C).

In a large mixing bowl, combine the cold, cubed unsalted butter, powdered sugar, and all-purpose flour. Mix until crumbly.

Press the crumb mixture evenly into the greased 9x13 inch pan and bake for 12 minutes.

Remove the crust from the oven and sprinkle dark chocolate chips, dried cranberries, shredded coconut, and chopped pecans over the top.

Drizzle sweetened condensed milk over the toppings for even coverage.

Bake again for 18 minutes until bubbly and golden around the edges.

Allow the bars to cool completely in the pan before slicing into squares.

Store sliced bars in an airtight container in the refrigerator.