I am going to go back through my answers and find where I put my spinach lasagna on for someone so it will be just copied and pasted...hope you try it.
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My favorite meal is Spinach Lasagna. It is so good.
Ingredients and how to prepare them before building the lasagna
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frozen chopped spinach, I use 2 boxes
Cook the spinach according to the directions on the package. Then let it cool. Drain it, smoosh it, twist it in a towel, smoosh it again, spin the strainer around, smoosh it again, get all the water out...it takes some doing...lol.
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I cook the noodles after the spinach mixture is done since it may need to cool a bit before you can wring out all the excess water....
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Lasagna noodles
You cook the noodles according to the package and take them out of the boiling water when done and put them laid out on greased foil paper so they can be handled when putting the lasagna together.
Keep the foil.......use it to cover the top of the lasagna when it bakes, oily side down. The cheese can stick to the foil and make the lasagna top cheese-less...lol.
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ricotta cheese, depends on how much cheese you like in it. I like the big one. My vegetarian friend likes the small one.
Your favorite spaghetti sauce. I like the one that is chunky and is Garlic and Herbs. I use 2 cans/jars of it and use a slotted spoon to put it on top of the spinach mix.
1 egg, stir it up a bit to break the yolk and mix it up.
Some dried parsley if you like the flavor, about 1 teaspoon if you like a little, up to a Tablespoon if you like it very well. I don't really like it so I leave it out.
Sliced or shredded mozzarella cheese. a couple of cups or a bunch of slices. They tend to be more uniform and melt nicely.
Various items like olive oil, foil greased with olive oil, a lasagna pan or 13"X9" pan greased inside with olive oil on the bottom and sides.
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The spinach mix.
Cooked completely drained spinach, dump in the egg in, dump in the ricotta, add the parsley if you want it. Mix it up well. I use my hands and mush it like meat loaf. Set it aside.
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I usually have 2 layers in my 13"X9" pan. I do not put noodles on the bottom but do top it off with them then put cheese on the top of the noodles.
Now you have the spinach mix, the lasagna noodles, the sauce, the cheese, etc..all ready to build a lasagna.
If you like lasagna noodles on the bottom then put 3 on the bottom of the greased pan. If that fills the bottom of the pan then add some of the spinach mix.
So, it goes like this.....read it from bottom to top...
top of lasagna
Cheese
noodles
spaghetti sauce
spinach mix
cheese
noodles
spaghetti sauce
spinach mix
bottom of pan, oiled with olive oil
Cover with the oiled foil and bake about 20-30 minutes until it is heated all the way through and the egg has had time to cook.