Start a stock pot of boiling salted water on the stove tor the lasagna noodles
Add the sausage to a hot skillet
Brown the sausage
Once the sausage has browned add the peppers and onions
When the peppers and onions are glistening you can add the mushrooms and the garlic
You water should be boiling in the pot now so add your lasagna noodles
Par cook the lasagna noodles they should be just bendable, do not overcook
Remove them carefully and place into a large mixing bowl
Remove the meat mixture from the skillet and place into another bowl
Pre-heat the oven to 350 degrees F
Add a small amount of sauce to the lasagna pan
Add in the 1st layer of noodles
Add dollops of ricotta so it will spread easily
Add some of the provolone and shredded mozzarella cheese
Add some of the meat mixture
Layer some spinach and zucchini
Add some sauce
Repeat until you have no more room or until you run out of ingredients
Add noodles and zucchini to the top layer
Top with sauce and cheese Add salt and pepper
Cover with aluminum foil and cook for 60 minutes uncover for another 10 minutes or until the lasagna reaches an internal temperature of 165 degrees F