Potato Casserole with Caramelized Onions

Indulge in the comforting flavors of this creamy Potato Casserole with Caramelized Onions, a show-stopping side dish perfect for holidays or cozy dinners. Thinly sliced Russet potatoes are layered with rich cheddar cheese, decadent caramelized onions, and a warm thyme-infused cream sauce, creating a dish that’s as luscious as it is satisfying. Topped with a golden, crunchy blend of breadcrumbs and Parmesan, this casserole bakes to perfection with a bubbly, crispy finish. Easy to prepare and deeply flavorful, this hearty bake pairs beautifully with roasted meats or fresh salads. Whether you're looking for an elegant crowd-pleaser or a comforting family favorite, this potato casserole is sure to steal the show. Ideal keywords: potato casserole, caramelized onions, creamy potato bake, holiday side dishes, comfort food recipes.

Nutriscore Rating: 62/100

Prep Time:20 mins

Cook Time:75 mins

Total Time:95 mins

Servings: 6

Ingredients

• 6 medium Russet potatoes
• 3 large Yellow onions
• 4 tablespoons Butter
• 2 tablespoons Olive oil
• 1.5 cups Heavy cream
• 1.5 cups Shredded cheddar cheese
• 2 teaspoons Fresh thyme
• 1.5 teaspoons Salt
• 0.5 teaspoons Black pepper
• 0.5 cups Breadcrumbs
• 0.25 cups Parmesan cheese

Directions

Step 1

Preheat your oven to 375°F (190°C) and grease a 9x13-inch baking dish with butter or oil.

Step 2

Peel the potatoes and slice them thinly, about 1/8-inch thick. Use a mandoline slicer for uniform slices, if possible.

Step 3

Slice the onions thinly into rings.

Step 4

In a large skillet, heat 2 tablespoons of butter and 2 tablespoons of olive oil over medium heat. Add the sliced onions, a pinch of salt, and cook, stirring occasionally, until the onions turn golden brown and caramelized, about 25-30 minutes. Set aside.

Step 5

In a small saucepan, heat the heavy cream until just warm. Stir in 1 teaspoon of salt, black pepper, and fresh thyme.

Step 6

Layer half of the sliced potatoes in the prepared baking dish, slightly overlapping each slice. Sprinkle with a little salt, cheddar cheese, and half of the caramelized onions.

Step 7

Pour half of the warm cream mixture over the first layer.

Step 8

Repeat with the remaining potatoes, caramelized onions, and cheddar cheese, then pour the rest of the cream mixture evenly over the top.

Step 9

In a small bowl, combine breadcrumbs, Parmesan cheese, and 2 tablespoons of melted butter. Sprinkle this mixture evenly over the top of the casserole.

Step 10

Cover the baking dish with aluminum foil and bake in the preheated oven for 40 minutes.

Step 11

Remove the foil and bake for an additional 25-30 minutes, or until the top is golden and bubbly and a knife easily pierces through the potatoes.

Step 12

Allow the casserole to cool for 10 minutes before serving. Garnish with additional fresh thyme if desired.

Nutrition Facts

Serving size	(2190.3g)

Amount per serving	% Daily Value*
Calories	4030.8

Total Fat 258.9g	0%
Saturated Fat 143.4g	0%
Polyunsaturated Fat 4.1g
Cholesterol 695.4mg	0%
Sodium 6210.4mg	0%
Total Carbohydrate 319.9g	0%
Dietary Fiber 28.0g	0%
Total Sugars 35.3g
Protein 93.5g	0%

Vitamin D 9.0IU	0%
Calcium 1731.6mg	0%
Iron 15.9mg	0%
Potassium 6503.8mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 58.5%

Protein: 9.4%

Carbs: 32.1%