Cook the Ramen Noodles (3 package) and drain and rinse them in cold water. Save the ramen spice packets.
Whisk together Large Egg (1), Water (1 tablespoon), and 2 of the ramen spice packets. Add noodles and mix them into the egg mixture.
Spread out the noodles on a piece of parchment. Make a rough rectangle that is about 1/2-inch thick.
Then add a top layer of parchment, a second sheet pan, and something heavy. Press the noodles for about 10 minutes.
Peel off the parchment paper. Bake the noodles as a solid block at 375 degrees F (190 degrees C) for 15 minutes.
Cut the croutons with a chef's knife. Do not move them. Put them back in the oven for another 15 minutes. This will really firm up the croutons and crisp the edges.
Break up the croutons and flip them a bit. They should be getting crunchy on the outside. Put them back into the oven for 10-15 minutes so they get even crunchier.