Preheat your oven to 350°F (175°C) and grease a 9x13-inch baking dish.

In a large mixing bowl, combine crushed graham crackers (if using), shredded coconut, melted butter, and condensed milk until a sticky batter forms.

Pour the mixture into the prepared baking dish, spreading it evenly and pressing down gently.

Bake for 20–25 minutes until the top is lightly golden and the edges pull away from the sides.

Remove from the oven and cool for 10–15 minutes at room temperature.

Transfer to the refrigerator for at least an hour to chill and firm up.

Once chilled, slice into squares and serve chilled or at room temperature, garnished with toasted coconut if desired.