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Close-up of golden-brown baked French Onion Potatoes using French Onion Soup, bubbling in a white oval dish.

French Onion Soup Casserole Potatoes


  • Author: Ahazzam
  • Total Time: 80 min
  • Yield: 6 servings
  • Diet: Vegetarian

Description

A simple baked potato casserole using condensed French onion soup for a rich, savory flavor.


Ingredients

Scale
  • 2 lbs potatoes, peeled and thinly sliced
  • 1 can (10.5 oz) condensed French onion soup
  • 1 cup beef broth
  • 1/2 cup sour cream
  • 1 teaspoon dried thyme
  • 1/4 teaspoon black pepper
  • 1 cup shredded Gruyere cheese
  • 1/2 cup breadcrumbs (optional)


Instructions

  1. Preheat your oven to 375 degrees Fahrenheit (190 degrees Celsius). Lightly grease an 8×8 inch baking dish.
  2. In a large bowl, whisk together the condensed French onion soup, beef broth, sour cream, dried thyme, and black pepper until smooth.
  3. Add the thinly sliced potatoes to the soup mixture and toss gently until all slices are coated.
  4. Pour the potato mixture into the prepared baking dish, spreading the slices evenly.
  5. Cover the dish tightly with aluminum foil.
  6. Bake for 45 minutes.
  7. Remove the foil. Sprinkle the shredded Gruyere cheese evenly over the top of the potatoes. If using, sprinkle breadcrumbs over the cheese.
  8. Return the dish to the oven, uncovered, and bake for another 15 to 20 minutes, or until the potatoes are tender when pierced with a fork and the cheese is melted and lightly browned.
  9. Let the casserole rest for 5 minutes before serving.

Notes

  • For extra onion flavor, you can sauté one small, sliced yellow onion before mixing it with the soup base.
  • Use Russet or Yukon Gold potatoes for the best texture in this bake.
  • If you do not have Gruyere, Swiss cheese works as a good substitute.
  • Prep Time: 15 min
  • Cook Time: 65 min
  • Category: Side Dish
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 serving
  • Calories: 310
  • Sugar: 5
  • Sodium: 750
  • Fat: 14
  • Saturated Fat: 8
  • Unsaturated Fat: 6
  • Trans Fat: 0
  • Carbohydrates: 38
  • Fiber: 4
  • Protein: 11
  • Cholesterol: 35