Traditional Slow Cooker Onion Soup
Classic slow-cooked onion soup with a deep, rich flavor, perfect for warming up on a chilly day.
Prep time: 15 minutesCook time: 8 hoursServes: 6
Ingredients
4 large yellow onions, thinly sliced
2 tablespoons unsalted butter
8 cups beef broth
2 tablespoons olive oil
1 tablespoon Worcestershire sauce
1/2 teaspoon salt
1/4 teaspoon black pepper
1 bay leaf
1 teaspoon fresh thyme leaves
1 baguette, sliced
2 cups grated Gruyère cheese
Instructions
1. Melt butter and olive oil in a skillet over medium heat. Add onions and cook until caramelized, about 15 minutes.
2. Transfer caramelized onions to slow cooker. Add beef broth, Worcestershire sauce, salt, pepper, bay leaf, and thyme.
3. Cover and cook on low for 6-8 hours or until onions are tender and flavors meld.
4. Preheat broiler. Ladle soup into oven-safe bowls, top with baguette slices, and sprinkle with Gruyère cheese.
5. Place bowls under the broiler until cheese is melted and bubbly, about 2-3 minutes.
Storage
Store in an airtight container in the refrigerator for up to 3 days.
Reheating
Reheat on the stove over medium heat until warmed through.
Scan for cooking tips & leave a review!
itsonly.recipes/view/traditional-slow-cooker-onion-soup
This recipe is for informational purposes only. Always follow proper food safety practices, cook foods to safe internal temperatures, and store leftovers appropriately. Results may vary.
