Step 2: Prepare the Potatoes
- Peel and thinly slice the potatoes (around ⅛-inch thick). A mandoline slicer ensures even slices for consistent cooking.
- Place the slices in a bowl of cold water to prevent browning and rinse off excess starch.
- Dry the slices with paper towels before layering to avoid excess liquid in the dish.
Step 3: Prepare the Cream Sauce
In a small saucepan:
- Combine 1 cup of heavy cream, ¼ cup of whole milk, 1 tablespoon of butter, ½ of the grated Parmesan (¼ cup), thyme, nutmeg, salt, and pepper to taste.
- Gently warm over medium-low heat, stirring occasionally.
- Once warm and the cheese is mostly melted, stir in the mashed roasted garlic paste and whisk until smooth. Do not let it boil.
Result: A luxurious, infused cream base that ties the entire dish together.
Step 4: Assemble the Dish
- Grease a 9×13-inch baking dish with butter.
- Drain and pat the potato slices dry.
- Layer them vertically or slightly shingled across the dish for an appealing presentation.
- Pour the garlic cream mixture evenly over the potatoes, letting it seep into the cracks.
- Cover tightly with foil.
Step 5: Bake in Stages
Stage 1: Covered Baking
- Place the foil-covered dish into the preheated oven.
- Bake for 40 minutes until the potatoes start to become tender.
Stage 2: Uncover and Add Cheese
