INGREDIENTS
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1 1/2 pound cremini mushrooms, roughly chopped
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1/2 pound shiitake mushrooms, roughly chopped
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Salt
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1 generous cup of chopped onions
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1/4 cup olive oil plus more for keeping the noodles from sticking to each other
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4 cloves garlic, chopped (about 4 teaspoons)
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1 6-ounce can tomato paste
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2 cups tomato sauce
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1 28-ounce can crushed tomatoes (I recommend Muir Glen brand with added basil)
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1 cup water
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1 Tbsp dried thyme
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1/2 teaspoon red pepper flakes
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1 Tbsp sugar
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2 10-ounce boxes frozen chopped spinach, thawed, squeezed in clean towel of excess moisture
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1 lb lasagna noodles (16 to 20 noodles)
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1 15-or-16-ounce container of ricotta cheese
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1/4 cup chopped fresh basil
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1/4 pound pecorino or parmesan cheese, grated (about 1 cup)
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1 pound shredded mozzarella cheese (about 4 cups)
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Special equipment needed: 1 large casserole pan, preferably 10x15-inches