Easy Onion Soup
A comforting bowl of Easy Onion Soup features the rich flavors of caramelized onions simmered in a savory broth, topped with melted Swiss cheese on toasted French bread. Perfect for chilly evenings, this dish is ideal for anyone seeking a warm, hearty meal that's simple to prepare.
Ingredients
Instructions
- Saute onions in butter until they are soft.
- Add boiling water, beef broth, chicken broth, salt, pepper, and sugar.
- Bring the mixture to a boil.
- Reduce heat and simmer uncovered for 1 hour.
- Place a slice of Swiss cheese on each slice of toasted French bread.
- Put the bread under the broiler until the cheese melts, then place it on top of a bowl of soup.
Tips & Substitutions
For an extra depth of flavor, consider adding a splash of white wine while sautéing the onions. If you prefer a vegetarian version, substitute the beef and chicken broth with vegetable broth. You can also experiment with different cheeses like Gruyère or cheddar for a unique twist. Make sure to slice the bread thick enough to hold the cheese without becoming soggy.
Serving Suggestions
Serve the soup in warm bowls for a cozy presentation. It pairs beautifully with a simple green salad or a side of roasted vegetables for a complete meal. For a heartier option, consider serving it alongside a sandwich, such as a classic grilled cheese or a turkey club. This soup also makes a fantastic starter before dishes like Easy Coq Au Vin.
Storage & Reheating
Store leftover onion soup in an airtight container in the refrigerator for up to 3 days. When reheating, add a splash of water to loosen the soup and heat it gently on the stove or in the microwave until warmed through. If you prefer the cheese on top, rebroil the cheese-covered bread separately before serving.
Nutrition & Diet Analysis (per serving)
Each serving of Easy Onion Soup contains roughly 1059 calories, with 45g protein, 56g carbohydrates, and 75g fat. It is an excellent source of vitamin C (191% of the Daily Value), calcium (96% of the Daily Value), and protein (89% of the Daily Value), and a good source of potassium and iron. Note that it is relatively high in sodium, at 2214mg per serving (96% of the Daily Value).
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 make this soup ahead of time?
Yes, this onion soup can be made ahead of time and actually tastes better the next day as the flavors meld together. Just follow the recipe until the simmering step, let it cool, and store it in the fridge. Reheat before serving, adding cheese-topped bread just before serving for a fresh, melty finish.
How can I make this soup vegetarian?
To make this onion soup vegetarian, simply replace the beef and chicken broth with vegetable broth. This substitution maintains the soup's rich flavor while accommodating vegetarian diets. You can also enhance the flavor with a dash of soy sauce or miso for added depth.
What type of bread works best for this recipe?
For the best results, use a sturdy bread like French or Italian bread that can hold up to the soup without becoming soggy. Sourdough also adds a nice tang that complements the sweet onions. Toasting the bread before adding the cheese is essential to achieving that perfect melt and texture.
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).