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Caramelized Onion Scalloped Potatoes

Prep 50 min
Total 2 hr 10 min
Servings 12

Caramelized onions and an easy homemade cream sauce make for a decadent, flavorful side dish that's miles from ordinary scalloped potatoes. We dare you to make it just once. MORE+ LESS-

By Tablespoon Kitchens

March 16, 2017

Ingredients

tablespoons olive oil

large yellow onion, thinly sliced

cups heavy whipping cream

cloves garlic, crushed

3/4

teaspoon kosher salt

1/2

teaspoon ground pepper

sprigs fresh thyme, plus 1 teaspoon chopped fresh thyme leaves for topping

2 1/2

lb Yukon Gold potatoes, peeled and thinly sliced

1 1/4

cups shredded Gruyère cheese (5 oz)

Steps

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1

Heat oven to 325°F. Spray 2 1/2-quart oval casserole with cooking spray.
2

In 12-inch skillet, heat oil over medium heat. Add onion; cook 18 to 22 minutes, stirring frequently, until very soft and caramelized.
3

In 2-quart saucepan, heat whipping cream, garlic, salt, pepper and thyme sprigs to simmering over medium-high heat. Reduce heat; cover and simmer 10 minutes, stirring occasionally. Uncover and simmer 5 minutes longer, stirring occasionally. Set aside.
4

Layer one-fourth of the sliced potatoes in bottom of casserole. Top with one-third of the caramelized onions and 1/4 cup of the shredded cheese. Repeat layers two more times. Top with remaining potatoes. Strain cream mixture, and pour evenly over potatoes. Sprinkle remaining 1/2 cup cheese on top.
5

Bake uncovered 1 hour to 1 hour 10 minutes or until potatoes are tender and mixture is bubbling and browned on top. Cool 10 minutes. Sprinkle with 1 teaspoon chopped fresh thyme leaves before serving.

Use a mandoline slicer to thinly and uniformly slice potatoes, if desired.

Expert Tips

Swap Yukon Gold potatoes for russet potatoes, if desired.

Nutrition Information

Nutrition Facts

Serving Size: 1 Serving

Calories: 290
Calories from Fat: 190

% Daily Value

Total Fat: 21g; 32%
Saturated Fat 12g 59% Trans Fat 1/2g
Cholesterol: 65mg; 22%
Sodium: 250mg; 10%
Potassium: 360mg; 10%
Total Carbohydrate: 19g; 6%
Dietary Fiber 1g 6% Sugars 3g
Protein: 6g

% Daily Value*:

Vitamin A: 15%; 15%
Vitamin C: 10%; 10%
Calcium: 15%; 15%
Iron: 2%; 2%

Exchanges:

1 Starch; 0 Fruit; 1/2 Other Carbohydrate; 0 Skim Milk; 0 Low-Fat Milk; 0 Milk; 0 Vegetable; 0 Very Lean Meat; 0 Lean Meat; 0 High-Fat Meat; 3 1/2 Fat;