Brussels Sprouts without orange

3 tablespoons olive oil divided, or butter 1 small onion, yellow chopped * 1 cup mushrooms, button or cremini, sliced 1 cup brussel sprouts outer layers[...]

2 1/2 tablespoons olive oil 1 small onion peeled and chopped 1 cup mushrooms button or cremini, sliced, 4 each brussel sprouts outer layers removed, and[...]