Feeding yourself and the kids is no problem. Feeding yourself, the kids, and the 30 people you invited to the “last minute” barbecue this weekend? Big problem. If you don’t make enough food, you’ll have hungry party guests. If you make too much, you end up wasting money. So, before you head into the grocery store with 4 empty shopping carts, cross-check this easy menu guide to make sure your shopping list checks out.