Directions

Preheat oven to 325 degrees Fahrenheit.

Slice zucchini lengthwise into very thin slices. Lay zucchini slices flat on paper towel for 15 minutes to remove some moisture.

In a medium skillet add in ground beef and cook for a few minutes. Add in onion and cook till beef has browned and onions have softened. Add in mushrooms, tomato sauce, tomato paste, basil and oregano. Continue to simmer for about 15 minutes till sauce has thickened.

In a medium bowl mix together ricotta, egg and parsley till mixture is combined.

In a 9 x 13" casserole dish layer half the meat sauce. Top meat sauce layer with 1/2 of the zucchini slices. Spread 1/2 the ricotta, mozzarella and parmesan over top. Add all the spinach to the middle layer. Repeat the layers with the remaining ingredients.

Cover casserole in tin foil and bake in the oven for 45 minutes. Remove the foil and increase the temperature of the oven to 350 degrees Fahrenheit and bake for another 15 minutes. Let stand for 5 minutes then serve.