Step 1Melt 1 tablespoon of butter in the oil in a skillet over medium-low heat, then cook the onions until they are translucent, 5 to 8 minutes. Do not brown. Toward the end of cooking, add the dried herbs and mushrooms, raise the heat to medium, stir and cook ever so briefly, only until the scent begins to rise.
Step 2Remove from the heat, mix with the chopped nuts, celery, bread, oysters, beaten egg and salt and pepper to taste. Stuff in a turkey or place in a 13x9-inch glass baking dish and bake at 350 degrees for 20 minutes.