Buffet Onion Casserole

Prep: 15 min Cook: 60 min Serves: 8 Cuisine: American

A hearty onion casserole layered with cheese, potato chips, and creamy mushroom soup, baked to perfection. Perfect for casual family dinners and comfort food lovers.

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Ingredients

  • 4 cups medium onions, sliced
  • 2 cups grated cheese
  • 10 oz. bag potato chips
  • 2 cans cream of mushroom soup
  • 1/2 teaspoon salt
  • pepper to taste
  • 1/2 cup milk

Instructions

  1. Grease a 9 x 13-inch pan or an equivalent baker.
  2. Layer half of the sliced onions, half of the grated cheese, and half of the potato chips in the prepared pan.
  3. Whip up one can of cream of mushroom soup and pour it over the layered ingredients.
  4. Repeat the layers with the remaining onions, chips, and cheese.
  5. Mix the second can of cream of mushroom soup with the 1/2 cup of milk and pour over the top.
  6. Bake at 350°F for 1 hour until bubbly and golden.

Nutrition & Diet Analysis (per serving)

374 kcal 19% DV
Protein Fat Carbs

Macronutrients

Protein 9.3g 19% DV
Total Fat 16.1g 21% DV
Carbs 48.8g 18% DV
Fiber 3.1g 11% DV
Sugar 15.7g 31% DV

Electrolytes

Sodium 10208.2mg 100% DV
Potassium 667mg 14% DV
Cholesterol 10.8mg 4% DV

Vitamins & Minerals

Vitamin A 81.5mcg 9% DV
Vitamin C 31.5mg 35% DV
Vitamin D 0.4mcg 2% DV
Calcium 270.3mg 21% DV
Iron 2.5mg 14% DV
Diet fit Under 400 cal
Contains Milk

Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.

* % Daily Values based on a 2,000 calorie diet (FDA 2020).

Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).

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