1 layer of tomato sauce
1 layer of meat
1 layer of noodles
spread 1/2 container of ricotta cheese
sprinkle some shredded mozzarella
layer of mushrooms
layer of spinach ( used raw baby spinach) 
layer of tomato sauce
layer of meat
layer of noodles 

Last: Repeat the above and top with noodles & some cheese on top
 
Cover with alumnium foil while it bakes for 30 min, then pull the foil off and bake for 15 more
 
Layer it any way you want, I kinda look at the back of the lasgna box and just get started.  I can't seem to find my progresso plum tomatos any more, so switched to this other brand of whole rome tomato's in a big yellow can (at Albertsons)   I do toss the noodles in some olive oil.

Substitute: 1 homemade noodle pkg from the frozen section at the store.