4 chicken breasts, cut into strips (you could use thigh meat as well or chicken strips)
1 (8 ounce) container sour cream or 1 (8 ounce) container plain yogurt
1 box Ritz crackers (the 3 roll size or the minis which crush easier, you can substitute bread crumbs if you like) or 1 box Chicken In A Biscuit crackers (you can substitute bread crumbs if you like)
1 cup sweet butter
1/2 cup parmesan cheese
2 tablespoons tarragon (for color and flavor) or 2 tablespoons marjoram (for color and flavor)

1  Clean chicken and pour sour cream over it and let marinate for about an hour in the refrigerator.
2  Meanwhile, take crackers and crush into medium course crumbs, mix in Parmesan cheese and Tarragon/ Marjoram.
3  Melt half of the butter and pour on the bottom of a 9×13 baking dish.
4  Dredge chicken in the cracker mixture and set in baking dish.
5  Repeat until complete.
6  Melt rest of butter and pour on top of chicken.
7  Bake@ 350 for 35-45 minutes or until golden brown.

source:       http://www.food.com/recipe/stevens-world-famous-to-die-for-sour-cream-chicken-12522