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5.0 from 6 votes

French Onion Scalloped Potatoes

Creamy, cheesy scalloped potato casserole topped with crispy French onions.

Prep Time
10 mins
Cook Time
10 mins
Total Time
40 mins
Servings: 6 servings
Calories: 277 kcal
Course: Side Dish
Cuisine: American

Ingredients

  • 1 ½ pounds gold potatoes or baby Yukon potatoes, washed and thinly sliced (⅛ of an inch thick)
  • 2 tablespoons butter
  • 3 tablespoons flour
  • 2 teaspoons garlic powder
  • 2 cups milk
  • 1 ½ cups shredded white sharp cheddar cheese divided (may sub an Italian cheese blend for milder flavor)
  • ½ packet ranch seasoning/dressing mix (If you love ranch flavor, you can use the whole packet)
  • salt and pepper to taste (I used about 1 teaspoon salt, ½ teaspoon pepper)
  • optional: ½ red onion thinly sliced
  • 1 cup crispy French onions (usually found with the salad toppings and croutons)

Instructions

    Cup of Yum
  1. Preheat oven to 375. Place sliced potatoes in a large pot and cover with water. Bring to a boil over medium high heat. Cover and cook about 15-minutes or until potatoes are tender. (The thicker your potato slices are, the longer they will take to cook) Drain and set aside.
  2. While potatoes are boiling, prepare the sauce. In a large sauce pan melt butter over medium heat. Add flour and stir until mixture clumps up. Slowly whisk in the milk until a thick sauce forms. Add garlic powder, 1 cup of cheese, ranch seasoning, salt, and pepper and stir until cheese is melted and completely incorporated.
  3. Add the sauce and potatoes to a large bowl and toss to coat. Transfer to a casserole dish. (If using red onions, layer them in with the potatoes) Sprinkle with remaining cheese. Bake, uncovered, for about 10 minutes until cheese is bubbly. Top with French onions and serve.

Notes

  • Make ahead by prepping, wrapping tightly and storing in fridge up to 24 hours. Transfer to preheated oven and add an extra 15 minutes to baking time. 

Nutrition Information

Calories 277kcal (14%) Carbohydrates 29g (10%) Protein 13g (26%) Fat 12g (18%) Saturated Fat 8g (40%) Cholesterol 38mg (13%) Sodium 398mg (17%) Potassium 635mg (18%) Fiber 3g (12%) Sugar 5g (10%) Vitamin A 425IU (9%) Vitamin C 22mg (24%) Calcium 316mg (32%) Iron 1mg (6%)

Nutrition Facts

Serving: 6servings

Amount Per Serving

Calories 277

% Daily Value*

Calories 277kcal 14%
Carbohydrates 29g 10%
Protein 13g 26%
Fat 12g 18%
Saturated Fat 8g 40%
Cholesterol 38mg 13%
Sodium 398mg 17%
Potassium 635mg 14%
Fiber 3g 12%
Sugar 5g 10%
Vitamin A 425IU 9%
Vitamin C 22mg 24%
Calcium 316mg 32%
Iron 1mg 6%

* Percent Daily Values are based on a 2,000 calorie diet.