Amazing Onion Casserole Recipe

This unbelievably easy onion casserole is a crowd-pleaser perfect for potlucks, holiday dinners, or any occasion! Layers of sweet onions, crispy chips, and melty cheese are baked to perfection in a creamy soup and milk mixture. Get ready for rave reviews!

Prep Time 20 mins
Cook Time 70 mins
Calories 300.9 kcal
Protein 21g
Rating 4.5 (2 Reviews)
Amazing Onion Casserole

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Recipe Author

Chef Forktionary, author of this recipe

Passionate home cook & Forktionary contributor.

Ingredients for Amazing Onion Casserole

  • Vidalia Onions
  • Mushroom Soup
  • ½ cup milk
  • Potato Chips
  • Mozzarella Cheese

How to Make Amazing Onion Casserole

  1. Preheat oven to 350°F (175°C).
  2. Thinly slice 3 large yellow onions (about 4 cups sliced).
  3. Layer half of the sliced onions in a greased 9x13 inch baking dish.
  4. Top with 1 (1 ounce) bag of your favorite potato chips, broken into smaller pieces.
  5. Sprinkle with 1 cup shredded cheddar cheese.
  6. Repeat layers: remaining onions, chips, and cheese.
  7. In a medium bowl, whisk together 1 (10.75 ounce) can condensed cream of mushroom soup and ½ cup milk.
  8. Pour soup mixture evenly over the casserole.
  9. Bake uncovered for 50-60 minutes, or until bubbly and golden brown.
  10. Let stand for 10 minutes before serving.

Chef's Tip for Extra Flavor

Elevate your dish with simple flavor boosters! A final flourish of freshly chopped herbs can add incredible brightness, while a squeeze of lemon or lime juice right before serving can awaken all the flavors. Don't underestimate a sprinkle of quality finishing salt or a drizzle of good olive oil to make your creation shine.

Nutrition Information (Approximate per serving)

Sodium

19 g

Sugar

20g

Fat

28g

Carbs

9g

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