Spinach and ricotta stuffed shells are a classic pasta dish from Home. Made. Interest. that is baked to perfection. This family friendly dinner is a great way to sneak in some extra veggies to picky little eaters. Fresh or frozen spinach, creamy ricotta cheese, and delicious marinara sauce are stuffed into pasta shells and baked until all of the flavors meld together. It's an easy dinner recipe the whole family will love.