One way to prepare oven-roasted Cornish game hens is to follow Pat and Gina Neely's recipe from the Food Network. Six Cornish game hens are seasoned and cooked in an oven. A vegetable and herb stuffing helps retain moisture and adds flavor.
To make roasted Cornish game hens, mix 1 tablespoon of salt, 2 tablespoons of lemon pepper, 1 tablespoon of dried basil and 1 tablespoon of poultry seasonings in a small bowl. Coat 6 Cornish game hens with olive oil, and then rub them with the seasoning blend. Place the hens on a baking sheet or sheets, leaving space between each one. Loosely stuff the cavity of each hen with some diced green bell pepper, diced celery stalk and diced onion.
Place the hens in an oven preheated to 375 degree, and roast them for one hour, or until a meat thermometer reads at least 165 F when it is inserted into the thickest part of the thigh. If you do not have a meat thermometer, make sure to cook the hens until the juices run clear.
When they are done, remove the pans from the oven, and loosely tent them with foil. Allow the hens to rest under the foil for 10 minutes before serving.