Place each family members choice of entree in the center of their own 12-inch by 18-inch sheet of foil wrap. Top with condiments and toppings of their choice-say, some salsa, black beans and sweet corn, or tomatoes, olives and herbs, or simply a brush of olive oil and a squeeze of lemon. Seal the foil packets by folding the top edge and sides, leaving enough room inside the packet for air to circulate.
Place packets on a baking sheet and bake in a preheated 450-degree oven for 20-25 minutes. Fish will cook quicker, about 15 minutes, depending on thickness of the fish. Make a batch of whole grain rice or couscous and an almost mess-free dinner is served.
Foil packets can also be cooked on the grill.
Caution: Be careful when unsealing the foil packets as the escaping steam will be very hot.