Step 1: Prepare the Crust. Preheat your oven to 350°F (175°C). In a mixing bowl, combine 1 cup of graham cracker crumbs, 2 tablespoons of powdered sugar, and ½ cup of melted butter. Stir until the mixture is well combined and resembles wet sand.
Step 2: Press the Crust into the Pan. Lightly grease your 9x9-inch baking pan. Press the graham cracker mixture evenly into the bottom of the pan using the back of a measuring cup or your hands. Make sure it’s compact and evenly distributed. Bake for 10 minutes until lightly golden.
Step 3: Prepare the Coconut Filling. While the crust is baking, combine the 14 ounces of sweetened condensed milk with the 7 ounces of sweetened, shredded coconut in a clean mixing bowl. Mix thoroughly until the coconut is fully coated in the milk.
Step 4: Assemble the Bars. Once the crust is done baking, remove it from the oven and let it cool slightly. Spread the coconut mixture evenly over the crust, pressing down gently to ensure it adheres. Return the pan to the oven and bake for an additional 15-20 minutes, or until the coconut filling turns golden brown.
Step 5: Make the Chocolate Topping. In a double boiler or microwave-safe bowl, combine the chopped semi-sweet chocolate and the 2 tablespoons plus 2 teaspoons of heavy cream. Heat gently until the chocolate is melted and smooth, stirring to combine.
Step 6: Add the Chocolate Topping. Once the coconut filling is golden and set, remove the baking pan from the oven and let it cool for about 10 minutes. Pour the melted chocolate mixture over the top, spreading it evenly with a spatula.
Step 7: Chill and Cut the Bars. Allow the Coconut Mounds Bars to cool completely at room temperature, then place them in the refrigerator for at least 2 hours to set. Once chilled and firm, cut into squares or bars and serve.