Ingredients for - Slow Cooker Onion Soup

1. Butter, melted ¼ cup
2. Sweet onion (such as Vidalia®), cut into thin slivers 1 large
3. Red onion, cut into thin slivers 1 small
4. Garlic, minced 2 cloves
5. Beef stock 4 cups
6. Brandy 3 tablespoons
7. Soy sauce 2 teaspoons
8. Worcestershire sauce 2 teaspoons
9. Salt and ground black pepper to taste 2 teaspoons
10. Italian-style seasoned croutons 2 cups
11. Provolone cheese 3 slices

How to cook deliciously - Slow Cooker Onion Soup

1 . Stage

Melt butter in a skillet over medium heat; cook and stir sweet onion and red onion in melted butter until softened, about 10 minutes. Cook and stir garlic into onion mixture until fragrant, about 2 minutes. Transfer to a slow cooker.

2 . Stage

Pour beef stock, brandy, soy sauce, and Worcestershire sauce into slow cooker. Season with salt and black pepper.

3 . Stage

Cook soup on High for 4 to 5 hours.

4 . Stage

Preheat the oven's broiler and set the oven rack about 6 inches from the heat source.

5 . Stage

Ladle the soup into 3 oven-proof bowls; top with croutons and a slice of Provolone per bowl.

6 . Stage

Broil in the preheated oven until cheese melts and begins to brown, about 3 minutes.