In a bowl, combine the meatloaf, balsamic vinegar, parmesan, and oregano; mix well and set aside.

In a small bowl, combine the egg with water; mix well and set aside.

Roll the fresh pasta dough out either by hand or by machine. 

After you have rolled the pasta out into sheets, cut the sheet into an even amount of squares.  Using a teaspoon, fill the center of half with the filling.  Brush around the filling with the egg wash and place the remaining squares on top.  Press down around the seal to push out any air bubbles.

Cook according to your recipe, or:

In half a gallon of rapidly boiling salted water, add the ravioli in batches of no more than 10.  Once they start to float, remove to a strainer.

Plate and serve according to your recipe. or:

Use the brown butter sauce here:http://myst.starforge.co.uk/index.cgi?block=3&op=view&id=444

Toss with liberal amounts of marinara sauce (such as this one: http://myst.starforge.co.uk/index.cgi?block=3&op=view&id=338 )