Take the dough out of the fridge. Cut into approx. 16 pieces or depending on how big you want your hopia to be.
In a flat surface. drizzle some flour and take one piece of the dough then flatten.
Take 1 tbsp from the filling and roll it into a ball.
Then wrap the dough around the filling and seal it.
When it's sealed, flatten it again making sure that the sealed part is on top.
Once it is flat, fold it in half. Do this process with all the cut dough.
Arrange in a baking tray with parchment paper and brush egg yolk on top of each hopia and sprinkle with sesame seeds.
Put in a pre-heated oven and bake @ 205°C or 400°F for 15-20 minutes. Cooking time may vary depending on the oven you Serve and Enjoy! Bon Appetit!