Preheat the Oven – Set your oven to 375°F (190°C) and grease a 12-cup muffin tin to prevent sticking.
Prepare the Potatoes – Wash, peel, and slice the potatoes into thin, even rounds (about 1/8-inch thick). A mandoline slicer works best for precision.
Mix the Ingredients – In a bowl, whisk together melted butter, garlic, heavy cream, salt, pepper, thyme, and smoked paprika.
Assemble the Stacks – Layer 5-6 potato slices in each muffin cup, brushing with the butter mixture between each layer. Sprinkle a little Parmesan cheese in between for extra cheesiness.
Top with Parmesan – Once the stacks are built, sprinkle the remaining Parmesan cheese on top of each stack.
Bake to Perfection – Cover the muffin tin with foil and bake for 30 minutes. Remove the foil and bake for another 15-20 minutes until golden brown and crispy on the edges.
Let Them Rest – Allow the stacks to cool for 5 minutes before carefully removing them from the tin.