olive oil
1 14-oz smoked sausage, sliced on the bias into thin medallions
2 Tbsp butter
2 onions, quartered and thinly sliced
1 garlic cloves, minced
salt
3/4 tsp pepper
1 1/2 tsps paprika
10 medium-size red skin potatoes, peeled and sliced into 1/2" thick circles (about 2 3/4 lbs)
1 1/2 cups chicken stock
1 Tbsp chopped flat-leaf parsley