Preheat oven to 350°F. Prepare a 7-inch round pan and a large baking dish. Set them aside.
Place a skillet over medium-heat. Add sugar, stirring constantly until it completely melts and turns into syrup.
Remove from heat, and pour the syrup into a 7-inch round pan. Spread the syrup evenly to cover the entire bottom of the pan. Set it aside and let it cool down and harden.
Whisk together eggs, condensed milk, whole milk and vanilla extract in a large mixing bowl.
Pour the mixture into the syrup coated pan. Cover tightly with aluminum foil.
Place the pan in a large baking dish. Then pour water into the dish. You need enough water to reach halfway up the pan.
Place the baking dish in the oven and bake for 1 hour.
Remove the dish from the oven, and lift the pan out of the baking dish. Then remove the aluminum foil. Let it cool to room temperature.
Once cooled, cover with another piece of aluminum foil. Place in the fridge for 4-6 hours.
When you’re ready to serve, remove the foil. Slide a knife along the edges of the pan.
Then place a plate on top of the round pan. Carefully flip it. Then lift the pan. Serve and enjoy!