Ingredients
For the Casserole:
- 1 lb (450 g) sausage (choose mild, spicy, or smoked, depending on your preference)
- 4 medium potatoes, thinly sliced
- 1 large onion, thinly sliced
- 2 cups shredded cheese (Gruyère, Cheddar, or a mix)
- 2 tbsp butter
For the Creamy Sauce:
- 2 cups (500 ml) whole milk
- 1 cup (250 ml) heavy cream
- 3 tbsp all-purpose flour
- 1 tsp Dijon mustard
- ½ tsp garlic powder
- ½ tsp nutmeg (optional)
- Salt and pepper to taste