This is a trimmed down recipie that I condenced from a great BBQ Chef. All the ingredients he explained for 1/2 of the mix were in "Italian Salad Dressing".
SO I USED ITALIAN DRESSING!1. All the ingredients for the second half were in BBQ sauce, So....
I USED BBQ SAUCE. If you want you can make your own Italian dressing & BBQ Sauce, but why? Cook chicken, ribs, steak or what ever in the oven for 30 min. at 350 degrees. While its cooking mix Italian salad dressing and BBQ sauce half & half in a bowl. Get some big Zip lock freezer bags and pour some of the mix in it. While the meat is still hot drop it into the bag and seal it, allow to cool. While its cooling its sucking the mix into the meat. (capillarity action) After its cooled you can freeze it or put it in a cooler if your going to use it soon. Throw the meat on the grill just to warm it up and put "Grill Marks" on it and your done. No muss no fuss no basting its done.

And you can save whats in the bag to use again.
Happy Trails
Len