Preheat the oven to 350℉.
Defrost the phyllo sheets according to the package directions. Take two layers at a time, place them on a 9x13-in baking dish crinkling it along the longer side. Repeat with the rest of the package.
Bake at 350 degrees F for 10 mins.
Remove from the oven. In the meantime, melt the butter. Drizzle on the crinkles and bake for 10 minutes.
In the meantime, add cornstarch, sugar, milk, cardamom, rose essence, rose syrup, and saffron to the rasmalai syrup/milk. Mix.
Remove the phyllo sheets from the oven.
Drizzle the rasmalai pudding mix evenly in between the crinkles. Tuck in slices of malai from the rasmalai.
Bake for 25 minutes, until the custard is set and the mixture is golden in color.
While it is baking prepare the rose syrup by adding the sugar, pinch of saffron, and water, and simmer for 5-6 minutes. Add the rose essence, rose syrup, cardamom, remove from the flame.
Once the baked phyllo sheets are out of the oven, drizzle the sugar syrup evenly.
Cool for a few minutes. Sprinkle with chopped pistachios and crushed dried rose petals. Cut into 12 or 16 pieces. Serve warm.