Chicken Sausage with butter

1/3 cup butter 1 small onion , diced 1/2 green pepper , diced 2 stalks celery , diced 2 cloves garlic (I usually use 5-6) 1 bunch scallion , trimmed and[...]

2 teaspoons vegetable oil 1 large onion (for 1 cup thin slices) 4 links smoked chicken, sausage (12 oz, or any smoked sausage or kielbasa) 2 granny smith[...]