INGREDIENTS
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1 pound bulk Italian sausage
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1 1/2 pounds lean ground beef
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1 (8 ounce) package fresh mushrooms, coarsely chopped
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1 teaspoon salt
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1/2 teaspoon freshly ground black pepper
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1/2 teaspoon dried Italian herb seasoning (optional)
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1/4 teaspoon red pepper flakes
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6 cups prepared marinara sauce
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2 tablespoons water, plus more as needed
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2 eggs
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2 pounds whole-milk ricotta cheese
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1 (8 ounce) container fresh mozzarella cheese, diced
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2/3 cup freshly shredded Parmigiano-Reggiano cheese
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1 teaspoon salt
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1/4 teaspoon freshly ground black pepper
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1 pinch cayenne pepper, or to taste
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1/4 cup chopped fresh parsley
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1 (16 ounce) package lasagna noodles
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1 (8 ounce) container fresh mozzarella cheese, diced
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1/2 cup freshly shredded Parmigiano-Reggiano cheese