Line a baking sheet with parchment paper and prepare a piping bag with the mascarpone cheese filling. Remove the coffee gummies from the mold.
Pipe 10g of mascarpone cheese filling onto the prepared baking sheet. Place a coffee gummy in the center, then pipe an additional 15g of mascarpone cheese filling on top, ensuring the gummy is fully covered. Repeat with the remaining ingredients.
Freeze the filled baking sheet for at least 30 minutes.
Divide the snow skin dough into 20g portions and roll into balls. Lightly coat each ball with cooked glutinous rice flour and flatten it, making the center thicker and the edges thinner.
Remove one cheese filling from the freezer at a time. Wrap it with a piece of snow skin dough, sealing the edges tightly.
Lightly coat the mooncake with cooked glutinous rice flour, shaking off the excess.
Sprinkle some cooked glutinous rice flour into the mooncake mold. Press the filled dough into the mold to create a pattern.
Place the finished mooncakes in an airtight container and freeze overnight.
Before serving, transfer mooncakes to the fridge for 1 hour for a better texture, or leave at room temperature for 15-20 minutes. Enjoy!