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French Onion Potato Bake Recipe

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★★★★★

4.8 from 117 reviews

A comforting French Onion Potato Bake combining tender sliced potatoes with a creamy, cheesy French onion-flavored sauce. This dish layers butter-sautéed onions, garlic, sour cream, condensed cream of mushroom soup, and dry French onion soup mix, creating rich, savory flavors baked to golden perfection. Ideal as a hearty side dish or vegetarian main course.

Ingredients

Scale

Potatoes and Vegetables

  • 2 lbs Yukon Gold or Russet potatoes, peeled and thinly sliced
  • 1 medium onion, thinly sliced
  • 2 cloves garlic, minced

Dairy and Sauces

  • 2 tbsp butter
  • 1 (10–12 oz) can condensed cream of mushroom soup or cream of chicken soup
  • 1 cup sour cream
  • 1 cup shredded cheddar cheese or Gruyère cheese

Seasonings

  • 1 (1 oz) packet dry French onion soup mix
  • Salt and black pepper, to taste

Optional Garnish

  • Fresh parsley, chopped

Instructions

  1. Prep the oven & dish: Preheat your oven to 375°F (190°C). Grease a 9×13-inch baking dish with butter or nonstick cooking spray to prevent sticking during baking.
  2. Make the creamy base: Melt butter in a saucepan over medium heat. Add the thinly sliced onions and cook for 5–7 minutes until they soften and turn golden. Stir in the minced garlic and cook for another minute until fragrant. Remove from heat. In a bowl, combine the cooked onion and garlic mixture with the condensed cream of mushroom (or chicken) soup, sour cream, and dry French onion soup mix. Stir thoroughly until the mixture is homogeneous.
  3. Assemble the bake: Arrange half of the sliced potatoes in an even layer at the bottom of the prepared baking dish. Spoon half of the creamy onion sauce over the potatoes, spreading it evenly. Sprinkle a portion of the shredded cheese over the sauce. Repeat the layering with the remaining potatoes, the remaining sauce, and cheese on top.
  4. Bake: Cover the baking dish tightly with aluminum foil. Place it in the preheated oven and bake for 35–40 minutes. Then remove the foil and continue baking uncovered for another 15–20 minutes until the potatoes are tender and the top is bubbly and golden brown.
  5. Serve: Remove from the oven and let the casserole rest for 5–10 minutes to allow the flavors to set. Garnish with chopped fresh parsley before serving, if desired.

Notes

  • You can prepare this casserole up to 24 hours in advance, then refrigerate it covered; bake just before serving.
  • For a vegetarian version, use cream of mushroom soup and ensure the French onion soup mix does not contain meat-derived ingredients.
  • Fresh pineapple can be added for a sweet contrast, but drain it well to avoid excess moisture.
  • To add protein, stir in cooked shredded chicken or diced ham before baking.
  • Leftovers can be refrigerated for 3–4 days or frozen for up to 2 months; reheat thoroughly before serving.
  • Optional toppings like breadcrumbs or crushed crackers mixed with butter can add a crunchy finish.

Keywords: French onion potato bake, casserole, cheesy potato bake, vegetarian casserole, French onion soup mix recipe

Find it online: https://deliciousdishspot.com/french-onion-potato-bake-recipe/