Spinach, Mushroom and Italian Sausage Lasagna

Ingredients

• 1 24oz jar marinara sauce
• 9 cooked lasagna noodles, broken in half
• 1 15oz container ricotta cheese
• 4 cups shredded mozzarella cheese
• 2 cups shredded Parmesan cheese
• 1 large egg
• 1 teaspoon kosher salt
• 1/2 teaspoon black pepper
• 1 tablespoon dried basil
• 1/4 cup freshly chopped Italian parsley
• 2 tablespoons dried parsley
• 2 cups chopped fresh spinach
• 1/2 cup mushrooms, sliced
• 1/2 medium onion, diced
• 2 cloves garlic, minced
• 2 tablespoons olive oil
• 1 Italian sausage link, pre-cooked and sliced in bite-sized chunks