Directions
Preheat the oven to 350 degrees F (175 degrees C).
Melt sugar in a medium saucepan over medium-low heat until liquefied and golden in color. Carefully pour hot syrup into a 9-inch round glass baking dish, turning the dish to evenly coat the bottom and sides; set aside.
Beat eggs in a large bowl. Add condensed milk, evaporated milk, and vanilla; beat until smooth. Pour egg mixture into the baking dish; cover with aluminum foil.
Bake in preheated oven for 1 hour. Let cool completely.
To serve, carefully invert onto a rimmed serving plate; let caramel sauce flow over flan.
