Saucy Hungarian Red Potato Goulash With Smoked Sausage And Savory Caramelized Onions

Name: Saucy Hungarian Red Potato Goulash With Smoked Sausage And Savory Caramelized Onions
Ingredients: Olive oil; 1 (14 ounce) smoked sausage, sliced on the bias into thin medallions; 2 tablespoons butter; 2 onions, quartered and thinly sliced; 1 garlic clove, pressed through garlic press; Salt; ¾ teaspoon freshly cracked black pepper; 1 ½ teaspoons paprika; 10 medium-size red skin potatoes, peeled and sliced into ½” thick circles (about 2 ¾ lbs); 1 ½ cup chicken stock; 1 tablespoon chopped flat-leaf parsley