Prep the vegetables.
Preheat oven to 375 degrees F.
In a pot, heat oil over medium high heat. Brown beef pieces (or other protein).
Add in sliced onion and mix. Then add in potatoes and carrots and mix well.
Pour in water. Bring to a boil and then reduce heat to low and cover for 10-15 minutes (or until vegetables are just about done). Be sure to skim the impurities off the top during the cooking process.
Put in the curry roux blocks and mix until sauce thickens. If it's a little too thick, add a little more water.
Ladle the curry into two ramekins.
Thin out a sheet of puff pastry. Cut the puff pastry sheet into sizes that will fit/cover the ramekins.
Place prepped puff pastry onto the ramekins and press around the edges.
Prepare your egg wash (you can either just beat the whole egg and use that, or I like to use the egg yolk mixed with 1 tbsp milk as my egg wash). Put egg wash on your puff pastry.
Put the pot pies into the oven for 25 minutes or until golden brown on top.
Serve and enjoy immediately. いただきます (itadakimasu)!