Lightly oil bottom of baking pan. Stir one cup of the chicken stock into the
spaghetti sauce and set aside.
Whisk the egg. Stir in ricotta cheese and one cup
of the mozzarella. Add garlic, salt and pepper and set aside.
Brown and drain the ground beef making sure to break it into very small pieces.
Season with salt and pepper. Cook the spinach until it is half done, approximately
two-thirds of the time indicated on the microwave directions.
Sauté the onion in 1/2 cup chicken stock until it is translucent. Cook the mushrooms
in the remaining 1/2 cup chicken stock adding the soy sauce and vinegar. Simmer
until all liquid is absorbed.
Mix together beef, spinach, onions and mushrooms.
Build the lasagna starting with a layer of sauce in the bottom of the pan. *Add
one layer of the uncooked noodles followed by more sauce, 1/3 of the cheese mixture
and 1/3 of the spinach/beef mixture. Repeat two more times, finishing off with the
spinach mixture and the remaining sauce.
Bake uncovered for 45 minutes, until liquid around the edges has been absorbed.
Sprinkle remaining mozzarella on top and bake for 15 minutes more.