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Caramelized Onion Scalloped Potatoes

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By Betty Crocker Kitchens
Updated Oct 29, 2024
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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.

Caramelized Onion Scalloped Potatoes

  • Prep Time 50 min
  • Total 2 hr 10 min
  • Servings 12
  • Ingredients 9
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Ingredients

  • 2 tablespoons olive oil
  • 1 large yellow onion, thinly sliced
  • 2 cups heavy whipping cream
  • 4 cloves garlic, crushed
  • 3/4 teaspoon kosher salt
  • 1/2 teaspoon ground pepper
  • 2 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)

Instructions

  • Step 
    1
    Heat oven to 325°F. Spray 2 1/2-quart oval casserole with cooking spray.
  • Step 
    2
    In 12-inch skillet, heat oil over medium heat. Add onion; cook 18 to 22 minutes, stirring frequently, until very soft and caramelized.
  • Step 
    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.
  • Step 
    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.
  • Step 
    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.

Nutrition

290 Calories
21g Total Fat
6g Protein
19g Total Carbohydrate
3g Sugars

Nutrition Facts

Serving Size: 1 Serving
Calories
290
Calories from Fat
190
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;
Carbohydrate Choice
1
*Percent Daily Values are based on a 2,000 calorie diet.

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