Prepare the Baking Dish: Thoroughly grease a 9 x 13 inch baking dish with butter or cooking spray to prevent sticking. This ensures easy serving and cleanup after the long baking process.
Mix the Rice Base: In the greased baking dish, combine the box of Uncle Ben's Long Grain Wild Rice (including the seasoning packet), cream of mushroom soup, cream of celery soup, and one to two cans of water. For a moister rice texture, use the second can of water. Stir until all ingredients are well incorporated into a smooth mixture.
Arrange the Chicken: Place the raw chicken breasts or tenders on top of the rice mixture, spacing them evenly throughout the dish. The chicken will cook in the steam from the rice mixture, absorbing the savory flavors below.
Seal and Bake: Cover the baking dish tightly with aluminum foil, ensuring it's completely sealed around all edges. This traps moisture and allows the dish to essentially steam-cook, which is crucial for the recipe's success. Place the covered dish in a preheated 350°F (175°C) oven.
Wait Patiently: Bake for 2 hours without opening the oven or removing the foil (hence the name "No Peek" Chicken). This long, slow cooking process ensures the rice fully absorbs the liquid and the chicken cooks to perfect tenderness.