Put 2 teaspoons of sugar and ¼ teaspoon of water on each Puto molds. Let it dissolve over low heat until it begins to bubble and the syrup turns into light brown. Continue making caramel until you’re done and turn off the heat. Set aside and let it cool down and harden.
To make the leche flan mixture, in a mixing bowl, mix egg yolks, condensed milk, evaporated milk and vanilla essence and mix until well combined. Strain leche flan mixture to get rid some lumps and air bubbles. Gently pour the mixture on top of caramel until 2/3’s full, continue until you’re done filling.
Put in a preheated steamer over low heat and let it steam for 15-18 minutes. Steam Mini-Leche Flan by batches, time depends on how large your steamer is. (I had mine steamed in 3 batches, 8 per load.)
You can tell when your Leche Flan is cooked by inserting a toothpick and it comes out clean you’re done. Let it cool at room temperature or refrigerate for 20 minutes. To serve, run a thin knife around the edges of the mini molds to loosen the flan. Invert the molds on a serving plate and serve as a dessert or toppings.