Make the Base: Start by preheating your oven to 350°F (175°C). Lightly grease a 9x13-inch baking dish and line it with parchment paper. In a medium-sized bowl, mix together the flour, brown sugar, melted butter, and a pinch of salt. Stir until everything is evenly incorporated and the texture becomes crumbly. Press the mixture firmly into the bottom of the prepared pan to form a uniform crust. Bake for 10-12 minutes, or until the edges are slightly golden. Remove from the oven and set it aside to cool.

Prepare the Filling : In a large mixing bowl, whisk the eggs until lightly beaten. Add the sweetened condensed milk, flour, brown sugar, melted butter, vanilla extract, and salt. Mix until smooth and well blended.

Assemble the Bars : Pour the coconut filling over the pre-baked crust, spreading it evenly to the edges. Sprinkle the additional 1 cup of shredded coconut evenly over the top of the filling.

Bake the Bars : Bake for 25-30 minutes, or until the top is golden and the center is set.

Serve and Enjoy : Once cooled, slice into squares or bars. These coconut bars are perfect for serving as a dessert or a sweet snack.