For a deeper flavor, caramelize the onions in a skillet before adding them to the slow cooker. This will add an extra layer of richness to the soup. Use a good quality chicken broth for the best flavor. Homemade broth is ideal, but store-bought works well too. To add more body to the soup, blend a portion of it with an immersion blender before serving. Serve hot, garnished with grated Gruyère cheese or toasted croutons.
Old-Fashioned Onion Soup
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PREP TIME15 mins
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COOK TIME4 hrs
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TOTAL TIME4 hrs 15 mins
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SERVING8 People
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VIEWS124
Savor the rich, caramelized flavors of this classic onion soup. Slowly simmered to perfection, this comforting soup features sweet onions, toasted bread, and savory chicken broth for a deeply satisfying culinary experience.
Ingridients
Adjust Servings
Nutrition
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Carbohydrate29 g
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Cholesterol31 mg
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Fiber3 g
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Protein7 g
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Saturated Fat8 g
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Sodium660 mg
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Sugar8 g
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Fat13 g
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Unsaturated Fat0 g
DIRECTIONS
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01 Step
Recipe View 5 mins In a large slow cooker, combine the sliced onions and melted butter. Mix well until the onions are evenly coated. (5 minutes)
02 Step
Recipe View 2 mins Stir in the cubed bread and chicken broth. If using, add the sherry or white wine at this stage. (2 minutes)
03 Step
Recipe View 1 mins Season with salt and pepper to taste. Remember that the flavors will concentrate as the soup cooks, so season conservatively at first. (1 minute)
04 Step
Recipe View 12 hrs Cover the slow cooker and cook on LOW for 10 to 12 hours or on HIGH for 4 to 5 hours, stirring occasionally. (Cooking time: 4-12 hours)
05 Step
Recipe View 5 mins During the last hour of cooking, stir the soup well to ensure even caramelization and to prevent sticking. Taste and adjust seasoning as needed. (5 minutes)
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Zola Rogahn
Jan 6, 2025My family loved this soup! It's perfect for a cold winter day.
Terrell Roob
Dec 12, 2024This soup is so easy to make and tastes amazing! I love that I can just set it and forget it in the slow cooker.
Fatima Okon
Nov 10, 2024This is my go-to recipe for onion soup. It's simple, delicious, and always a hit!
Ally Yost
Feb 21, 2024I added a splash of sherry at the end, and it really elevated the flavor. Will definitely make this again!