No longer relegated to layers of red sauce and heaps of meat, lasagna takes a turn for the creamy — and surprisingly healthy — with this big-batch recipe for Squash and Spinach Lasagna (pictured above).

Food Network Kitchen swaps out the traditional marinara or meat sauce in favor of a mixture of onions and fresh spinach in a milk-based sauce made thick with the help of cornstarch. Layer chopped butternut squash for color and an added boost of nutrition, and opt for part-skim mozzarella to keep the casserole light but satisfying. Perhaps the best part about this recipe is that it comes together with no-boil noodles, which means that you can assemble them in the casserole straight from the box; they'll soak up the liquid of the cream sauce and become tender as they cook in the oven.

Meatless Monday, an international movement, encourages people everywhere to cut meat one day a week for personal and planetary health. Browse more Meatless Monday recipes.