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Vegetarian Recipes

Onion Baked Potato Casserole

Potatoes, onion, cajun spices and lots of cheese makes this spicy potato casserole a fantastic side dish that will disappear quickly on Thanksgiving!

Onion Baked Potato Casserole
Yield: 6 - 8 servings
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Photo credit: © Eatwell101.com

Potatoes, onion, cajun spices and lots of cheese makes this spicy potato casserole a fantastic side dish that will disappear quickly on Thanksgiving!
Christina Cherrier
by Christina Cherrier
Christina Cherrier

Christina Cherrier is a recipe developer and editor for Eatwell101 since 2011. She specializes in savory recipes, quick dinner options, and holiday menus. She is a professionally trained cook and worked as a consultant in the hospitality industry.

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Updated Aug 12, 2025
Table of content

Ingredients list

  • 6 russet potatoes, sliced into ¼-inch slices (we used a mandoline slicer like this one)
  • 1 onion, minced
  • Salt and pepper
  • 2 tablespoons cajun spice blend (smoked paprika, bay, dried basil, dried oregano, dried thyme, celery seeds, black pepper, cayenne pepper)
  • Olive oil
  • 1 cup shredded cheddar cheese
  • 1 cup shredded monterey cheese
  • Fresh or dried parsley, to garnish (optional)

best-potato-casserole-recipePhoto credit: © Eatwell101.com

Directions

1. Preheat your oven to 375°F(190°C). Butter a 9×13 or two 9×9 casserole dishes.
2. Toss the potato slices in a large bowl with olive oil, salt and pepper, the cajun spice blend and onions.
3. Layer the potato slices in the dish, overlapping slightly.
4. Cover with foil and bake for 40 minutes. After 40 minutes, remove the foil and sprinkle with cheese. Bake for 10-15 minutes more. Allow the dish to rest for 15-20 minutes before serving.

potato-casserolePhoto credit: © Eatwell101.com
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Nutrition Info (Beta version)
* The presented values are approximate and shouldn't be considered as accurate. Please calculate your OWN nutrition information in a database using the brand names you have at hand. Each brand is different and nutrition information can vary.
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