Prepare a muffin tin by lightly greasing 4 wells with melted butter.
Carefully unravel the puff pastry, leaving it on the parchment paper it came with.
Brush the melted butter over top of the puff pastry with a pastry brush.
Sprinkle granulated sugar and matcha on top of the puff pastry.
Starting at one end, roll up the puff pastry (this time without the parchment paper).
Cut the rolled up log in half so you have 2 equal rolls. Then using the pastry wheel cutter, cut each roll lengthwise so that the rolled up sugar and matcha is exposed.
Coil each roll (like a snail) and place into a muffin tin well.
Repeat with the remaining.
Bake at 375°F/191°C for 45-50 minutes, until cooked through.
Remove from oven and carefully coat each cruffin with matcha sugar.
Cool completely before poking a hole at the top and piping in 1 tablespoon of Matcha Milk Jam.
Serve immediately.
Notes
These are best served on the day of. Unfilled cruffins can be stored in an airtight container, but should be enjoyed within a day or two.