Irish Onion Soup
Irish onion soup recipe with slow cooked onions, rich broth, and melted cheese. Classic homemade soup with deep flavor and simple preparation.
I chose to make this Irish onion soup on an evening when the house needed warmth and quiet. Onions cooked slowly fill the kitchen with a deep and comforting aroma. This soup feels steady and honest. It suits days when you want food to do more than just fill a bowl. The process rewards patience without feeling demanding.
What I enjoy about this recipe is the depth that comes from simple ingredients. The onions soften and darken slowly. The broth turns rich without heavy additions. A slice of bread and melted cheese finish it gently. Each spoonful feels balanced and familiar, which matters as tastes grow more refined.
My family reaction made this soup a keeper. Conversation slowed as bowls emptied. Someone asked for another serving before the pot cooled. This recipe builds trust because it delivers warmth and satisfaction without complication.
Questions you may have about this recipe
What onions work best for this soup
Yellow onions provide the best balance of sweetness and depth.
Does this soup take a long time
The cooking time allows flavor to develop but the steps stay simple.
Can this be made ahead
Yes. The flavor improves after resting and reheats well.
Is this soup heavy
The broth stays rich without feeling overly filling.
Does the bread matter
A sturdy bread holds up best under the cheese topping.
What you need to make Irish Onion Soup
4 large yellow onions sliced
3 tbsp butter
1 tbsp olive oil
2 cloves garlic minced
6 cups beef broth
1 tsp salt
0.5 tsp black pepper
1 tsp fresh thyme leaves
6 slices crusty bread
1.5 cups shredded Swiss cheese
How to make Irish Onion Soup
Heat butter and olive oil in a large pot over medium heat.
Add onions and cook slowly, stirring often, until deep golden.
Add garlic and cook for 1 minute.
Pour in beef broth. Add salt, pepper, and thyme.
Simmer gently for 30 minutes.
Toast bread slices lightly.
Ladle soup into oven safe bowls. Top with bread and cheese.
Broil until cheese melts and bubbles.
Tips
Cook onions slowly for best flavor.
Stir often to prevent burning.
Use oven safe bowls for broiling.
Serve hot for best experience.
Reader Reviews
⭐⭐⭐⭐⭐ “Deep flavor and very comforting. Perfect on a cold night.” Susan M
⭐⭐⭐⭐⭐ “Simple ingredients with rich results.” Carol L
⭐⭐⭐⭐ “Loved the soup. Next time I will add more cheese.” Diane R
⭐⭐⭐⭐⭐ “This reminded me of meals from years ago.” Margaret P
⭐⭐⭐⭐ “Easy to follow and very satisfying.” Helen B
Printable Recipe
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Irish Onion Soup
Irish onion soup delivers deeply cooked onions in a rich broth finished with toasted bread and melted cheese. This recipe focuses on patience and dependable comfort.
Ingredients
- 4 large yellow onions sliced
- 3 tbsp butter
- 1 tbsp olive oil
- 2 cloves garlic minced
- 6 cups beef broth
- 1 tsp salt
- 0.5 tsp black pepper
- 1 tsp fresh thyme leaves
- 6 slices crusty bread
- 1.5 cups shredded Swiss cheese
Instructions
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