This classic dessert bar has many names: Hello Dolly Bars, Coconut Dream Bars, and Magic Cookie Bars No matter what you call them, they are an irresistible treat that you are certain to love.
Preheat oven to 350° F. Grease a 9 x 13" baking pan and line it with parchment paper, leaving a 2 inch overhang on 2 sides.
Use a food processor to finely grind the graham crackers. Add the brown sugar, baking powder and salt and process until well combined. Next, add the butter and egg while processing. Pulse process until mixture is moist throughout and large clumps are formed.
Pour the graham cracker mixture into prepared baking pan. Gently pat down, using the palms of your hands, until evenly distributed. Bake for 15 minutes.
Pour the sweetened condensed milk over the baked crust and then spread evenly, using the back of a spoon. Next, sprinkle half of the chocolate on top of the condensed milk, followed by half of the chopped pecans. Be sure to evenly distribute each. Next, evenly distribute the coconut flakes over the chocolate and pecan layer. Finally, evenly sprinkle remaining half of chocolate and pecans over the coconut layer.
Bake in oven for about 25 minutes until evenly browned on top. Allow to cool on wire wrack for at least ten minutes, in pan. Then, use overhang of parchment paper to lift bars out of the pan and transfer to cutting board to slice and serve.