This spaghetti squash lasagna recipe is a delicious and healthy twist on the classic Italian dish. The spaghetti squash is roasted until tender and then layered with a mixture of ricotta cheese, spinach, and ground turkey. Topped with marinara sauce and mozzarella cheese, this dish is a crowd-pleaser that is low in carbs and high in protein. Serve it with a side salad for a complete and nutritious meal.