01 -
Preheat the oven to 175°C and grease a standard 12-cup muffin tin with cooking spray.
02 -
Toss the thinly sliced potatoes with half-and-half, garlic powder, nutmeg, black pepper, thyme, kosher salt, and grated Parmesan until evenly coated.
03 -
Divide the potato mixture evenly into the muffin cups, creating 12 stacks. Cover with aluminum foil and bake for approximately 60 minutes until potatoes are tender.
04 -
Remove the foil, top each potato stack with shredded Gruyère and crumbled bacon. Bake uncovered for 15 to 20 minutes until cheese melts and edges start to brown.
05 -
For a deeper golden crust, broil the stacks for an additional 2 to 5 minutes, watching carefully to avoid burning.
06 -
Sprinkle fresh parsley over the stacks and allow to cool in the pan for at least 10 minutes before serving warm.