Twice-Baked Potatoes

2 large Yukon Gold potatoes
4 T butter
2 T olive oil
med. yellow or vidalia onion halved and thinly sliced
3/4 C grated sharp cheddar cheese
1/4 C whole milk
2 t salt & more to taste
1 t fresh ground pepper & more to taste
1/4 C minced chives

Preheat oven to 400F, then bake potatoes for 1 hr, or until tender. Once baked, cut in half lengthwise and hollow out the middle leaving the skins. Set skins aside.

Beat potatoes together with other ingredients until smooth. Insert into the potato skins, top with chives to serve.

Can be made ahead and reheated for 10-15 min (25-30 if cold). Garnish with chives.