For the bake
01 -
2 lb (900 g) Yukon Gold potatoes, peeled if desired and diced into 1/2-inch pieces
02 -
1 teaspoon kosher salt, plus more for the potato water
03 -
1 tablespoon unsalted butter, plus more for the baking dish
04 -
14 oz (400 g) smoked sausage or kielbasa, sliced into 1/4-inch rounds
05 -
1 small yellow onion, diced
06 -
3 garlic cloves, minced
For the creamy cheese sauce
07 -
1 can (10.5 oz / 298 g) condensed cream of mushroom or cream of chicken soup
08 -
3/4 cup (180 g) sour cream
09 -
1/2 cup (120 ml) whole milk
10 -
1 teaspoon Dijon mustard
11 -
1/2 teaspoon black pepper
12 -
2 cups (225 g) shredded sharp cheddar cheese, divided
For serving
13 -
2 tablespoons chopped fresh parsley