Brussels Sprouts with hash

1 medium onion , chopped 2 tablespoons butter or 2 tablespoons margarine 1 large potato , peeled & cubed (about the size of hash browns) 1 lb Brussels sprout[...]

3 tablespoons butter , divided 1/2 lb shallot , thinly sliced coarse kosher salt 2 tablespoons apple cider vinegar 4 teaspoons sugar 1 1/2 lbs Brussels[...]

6 tablespoons butter , divided 1/2 lb shallot , thinly sliced coarse kosher salt 2 tablespoons apple cider vinegar 4 teaspoons sugar 1 1/2 lbs Brussels[...]

6 tablespoons butter , divided 1/2 lb shallot , thinly sliced 1 pinch coarse salt 1 pinch black pepper 2 tablespoons apple cider vinegar 4 teaspoons sugar 1[...]

1 medium onion , chopped 2 tablespoons butter or 2 tablespoons margarine 1 large potato , peeled & cubed (about the size of hash browns) 1 lb Brussels sprout[...]