How long should I marinate Chicken? I will be preparing a dinner which includes chicken which will be stuffed with different types of cheese, tomatoes and spinach but before that I have to marinate the chicken. In one of the recipes it was asked to marinate the chicken for 2 hours,  but the chicken I bought is pretty thick. So how long should I marinate it?
Marination is generally a surface treatment, so the thickness of your chicken is  irrelevant.  Really, the only thing that can penetrate is salt, primarily because of molecule size.  You can read a good explanation here.  I would say you're good with the 2 hours, but as you will see when you read the article, you might not even need that long...or you might want to rethink the marinade altogether.