Making these Butter Coconut Bars is surprisingly straightforward. Follow these detailed instructions, and you’ll be rewarded with a pan of gooey, coconutty goodness in no time!

Step 1: Prepare the Crust

1. Preheat your oven to 350°F (175°C). This is crucial to ensure even baking and prevent the crust from burning before the topping is cooked through. Position a rack in the center of the oven.
2. Grease and flour a 9×13 inch baking pan. This prevents the bars from sticking to the pan and makes them easier to remove once baked. Alternatively, you can line the pan with parchment paper, leaving an overhang on the sides to lift the bars out easily after baking. This is especially recommended for gooey bars like these.
3. In a large bowl, cream together the softened butter and granulated sugar. Use an electric mixer (stand mixer or hand mixer) for this step. Beat on medium speed until the mixture is light and fluffy. This process incorporates air into the butter and sugar, which contributes to a tender crust. It usually takes about 2-3 minutes. Scrape down the sides of the bowl as needed to ensure everything is evenly combined.
4. In a separate bowl, whisk together the all-purpose flour and salt. Whisking helps to aerate the flour and evenly distribute the salt, preventing clumps and ensuring a consistent texture.
5. Gradually add the dry ingredients to the wet ingredients. With the mixer on low speed, slowly add the flour mixture to the butter and sugar mixture, mixing until just combined. Be careful not to overmix, as this can develop the gluten in the flour too much, resulting in a tough crust. Mix until just the flour streaks disappear.
6. Press the dough evenly into the prepared baking pan. Use your fingers or the back of a spoon to press the dough into a uniform layer across the bottom of the pan. Ensure the crust is even in thickness for consistent baking.
7. Bake the crust for 15-20 minutes, or until lightly golden brown. Pre-baking the crust helps it to set and prevents it from becoming soggy when the moist coconut topping is added. Keep an eye on the crust as oven temperatures can vary, and you want it to be lightly golden, not overly browned.

Step 2: Prepare the Coconut Topping

1. While the crust is baking, prepare the coconut topping. In a large saucepan, melt the butter over medium heat. Melt the butter completely but don’t let it brown or burn.
2. Remove the saucepan from the heat and stir in the granulated sugar. Whisk or stir vigorously until the sugar is fully dissolved into the melted butter. The mixture will become smooth and slightly thickened.
3. Whisk in the eggs one at a time. Make sure to whisk well after each addition to fully incorporate the egg and prevent it from scrambling in the hot butter mixture.
4. Stir in the vanilla extract and salt. These flavor enhancers will add depth and complexity to the topping.
5. Pour in the sweetened condensed milk and stir until well combined. The sweetened condensed milk will make the mixture even richer and creamier. Ensure it is fully incorporated for a homogenous topping.
6. Stir in the sweetened shredded coconut. Add the coconut and mix until it is evenly distributed throughout the topping.

Step 3: Assemble and Bake the Bars

1. Remove the pre-baked crust from the oven. Carefully pour the coconut topping evenly over the hot crust. Spread it out to ensure it covers the entire surface of the crust.
2. Return the pan to the oven and bake for an additional 25-30 minutes, or until the topping is golden brown and set. The edges of the bars should be nicely browned, and the center should be set but still slightly gooey. To check for doneness, gently shake the pan – the center should jiggle slightly but not be liquid. Be careful not to overbake, as this can make the bars dry.
3. Let the bars cool completely in the pan on a wire rack. This is crucial for the bars to set properly and for easier cutting. Resist the temptation to cut into them while they are still warm, as they will be too soft and gooey. Cooling allows the topping to firm up and the flavors to meld together. Allow at least 2-3 hours for cooling, or even overnight for best results.

Step 4: Cut and Serve

1. Once completely cooled, cut the Butter Coconut Bars into squares or rectangles. Use a sharp knife to cut clean lines. If the bars are very gooey, you can chill them in the refrigerator for about 30 minutes before cutting to make it easier. For cleaner cuts, you can run your knife under hot water and wipe it clean between each cut.
2. Serve and enjoy! These Butter Coconut Bars are delicious served at room temperature or slightly chilled. They are perfect as a dessert, snack, or treat for any occasion.