6. **Bake:**
Bake the casserole in the preheated oven for 45 minutes. Remove the foil and bake for an additional 15 minutes, allowing the cheese to melt and become bubbly. Check if the potatoes are fork-tender before removing from the oven.

7. **Serve:**
Let the casserole cool slightly before serving. Garnish with fresh parsley or green onions if desired.