Rich and Creamy Baked Potatoes with Pour-Over Sauce

This recipe is the definition of cold-weather comfort: delicate layers of thinly sliced potatoes baked in a glass dish and blanketed with a luscious cream sauce, sweet caramelized onions, Parmesan, and fragrant thyme. As it bakes, it transforms into a golden, bubbling dish that falls somewhere between classic scalloped potatoes and a rich gratin—perfect for warming your kitchen on a chilly night.

Pair it with roasted chicken, meatloaf, or oven-baked pork chops. A fresh green salad or simple steamed vegetables balance the richness beautifully, while crusty bread and a side of applesauce or bright citrus slices complete a comforting, family-style meal.

Creamy Baked Potatoes 🥔✨

Ingredients:

Unsalted butter – 2 tbsp (plus 1 tbsp for greasing)
Yellow onions, thinly sliced – 2 large
Granulated sugar (optional) – 1 tsp
Olive oil (optional) – 1 tbsp
Heavy cream – 2 cups
Parmesan cheese, finely grated – 1 cup + 2 tbsp (for topping)
Kosher salt – 1½ tsp, divided
Black pepper – 1 tsp
Fresh thyme leaves (or dried) – 2 tsp fresh (or 1 tsp dried)
Russet or Yukon Gold potatoes, thinly sliced – 3 lbs

Directions:

Preheat the Oven
Set oven to 375°F (190°C). Butter or lightly spray a 9×13-inch glass baking dish.

Caramelize the Onions
In a skillet over medium heat, melt 2 tablespoons of butter. Add the sliced onions and ½ teaspoon salt. Cook for 20–25 minutes, stirring occasionally, until soft, golden, and sweet. If needed, add a drizzle of olive oil or a splash of water to prevent sticking. For quicker caramelization, sprinkle in the optional sugar.

Prepare the Cream Mixture
In a mixing bowl, whisk together the heavy cream, 1 cup of Parmesan, remaining salt, black pepper, and thyme. Fold in the warm caramelized onions.

Slice the Potatoes
Peel the potatoes if preferred, then slice into thin ⅛-inch rounds. A mandoline slicer helps keep the slices uniform for even cooking.

Assemble the Dish
Layer the potato slices evenly in the prepared casserole dish. Pour the creamy onion mixture over the top, gently pressing the potatoes so the sauce seeps between the layers.

Add Topping & Cover
Sprinkle the remaining 2 tablespoons of Parmesan evenly over the top. Cover the dish tightly with foil.

Bake Until Tender
Bake for 45–55 minutes, or until the potatoes are easily pierced with a fork.

Brown the Top
Remove the foil and continue baking for 15–20 minutes, until the top is golden brown and bubbling.

Rest & Serve
Allow the casserole to rest for about 10 minutes before serving to let the sauce thicken slightly. Serve warm and enjoy.

Tips:

• Uniform slices ensure consistent cooking.
• Letting the dish rest helps create a creamy, cohesive texture.
• Try adding rosemary or a dash of paprika for a flavorful twist.
• Perfect for cozy winter meals or festive gatherings.