Cooking healthier food for a household that prefers different meals

One person in our household wants lighter, vegetable-heavy meals; another prefers filling meat-and-potato dinners. Cooking two separate meals every evening isn't sustainable. We've had some luck making a common base—rice, roasted vegetables, a protein—then letting everyone assemble portions and toppings. What shared dinners can accommodate different preferences without becoming a build-your-own buffet every night?