Sweet Onion Casserole

Prep: 10 min Cook: 60 min Serves: 6 Cuisine: American

Sweet Onion Casserole is a comforting dish that combines the natural sweetness of onions with creamy Swiss cheese and tender rice. This hearty casserole is perfect for family gatherings or as a side dish for any meal, appealing to those who love rich, savory flavors.

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Ingredients

  • 1/2 c. rice
  • 7 to 8 c. chopped sweet onion
  • 1/4 c. melted oleo
  • 1 c. grated Swiss cheese
  • 3/4 c. half and half

Instructions

  1. Cook rice in 1 cup boiling water for 5 minutes; drain.
  2. Set rice aside. Cook onion in melted oleo until limp.
  3. Combine all ingredients, mixing well.
  4. Pour into a greased 2-quart casserole dish.
  5. Bake at 350° for 1 hour.

Tips & Substitutions

For a richer flavor, try using butter instead of oleo. If you're short on time, consider using pre-cooked rice or even quinoa for a different texture. To enhance the dish, add some sautéed mushrooms or bell peppers. If you prefer a stronger cheese flavor, substitute Gruyère or sharp cheddar for the Swiss. This casserole can be made ahead and refrigerated before baking.

Serving Suggestions

This Sweet Onion Casserole pairs beautifully with a fresh green salad or roasted vegetables for a complete meal. Consider serving it alongside grilled chicken or fish for a well-rounded dinner. For a cozy brunch, it complements dishes like Homemade Pancakes perfectly, making it a versatile addition to your table.

Storage & Reheating

Store any leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, place in a preheated oven at 350°F for about 20-25 minutes or until warmed through. You can also microwave individual portions for a quick meal, but the oven method helps retain the casserole’s texture.

Nutrition & Diet Analysis (per serving)

Each serving of Sweet Onion Casserole contains roughly 323 calories, with 9g protein, 62g carbohydrates, and 5g fat. It is a good source of protein (17% of the Daily Value), iron (15% of the Daily Value), and calcium (10% of the Daily Value). Note that it is relatively high in sodium, at 2150mg per serving (93% of the Daily Value).

323 kcal 16% DV
Protein Fat Carbs

Macronutrients

Protein 8.7g 17% DV
Total Fat 4.6g 6% DV
Carbs 61.7g 22% DV
Fiber 2.2g 8% DV
Sugar 28.1g 56% DV

Electrolytes

Sodium 2149.9mg 93% DV
Potassium 302mg 6% DV
Cholesterol 9.3mg 3% DV

Vitamins & Minerals

Vitamin A 35.8mcg 4% DV
Vitamin C 7mg 8% DV
Calcium 123.8mg 10% DV
Iron 2.8mg 15% DV
Diet fit Under 400 cal Low-fat
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).

Frequently Asked Questions

Can I use other types of cheese in this casserole?

Yes, you can experiment with different cheeses such as cheddar or Monterey Jack for varied flavors. However, keep in mind that the melting properties may differ, so choose cheeses that melt well to maintain the creamy texture of the casserole.

Is it possible to make this recipe vegetarian?

Absolutely! This recipe is already vegetarian-friendly as it contains no meat. To enhance its nutritional value, you could add some sautéed spinach or kale, or even some diced tomatoes for extra flavor and color.

Can I prepare this casserole ahead of time?

Yes, you can prepare the casserole a day in advance. Assemble all the ingredients in the greased dish, cover it tightly with plastic wrap or foil, and refrigerate. When ready to bake, remove from the fridge and allow it to come to room temperature before baking as directed.

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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