i agree with pitbulliest, don't rely on websites for stuff like that. buy a good book or two, like for example dr. pitcairn's complete guide to natural health for dogs and cats. his recipes are properly formulated to make sure your dog gets everything he needs.
it is possible to feed half commercial food and half home prepared, but it's still a good idea to first learn a little more about nutrition before jumping into that. dr. pitcairn's book also has a few recipes that are specifically formulated as "kibble toppings".
the new edition of this book is available for example on amazon for just about $13, so it's not going to break your bank.