Preheat oven to 350 degrees.
Combine flour, oats, brown sugar, baking soda, and salt in a medium-sized bowl. Add melted butter and press down evenly into a 9x13 inch glass baking dish. Bake at 350 degrees for 8 minutes. Cool slightly.
Combine fudge ingredients in a medium-sized sauce pan. Heat over medium heat until just melted and thick. Pour fudge over oat crust and allow to cool completely.
Place coconut in a food processor or blender and pulse 1-2 times until coarsely chopped.
Combine coconut and sweetened condensed milk and gently spread evenly on top of the fudge.
Cool and serve.