French Onion Soup (Slow Cooker)
Prep Time: 10 min
Cook Time: 250 min
Ingredients
- ✓ ¼ cup butter
- ✓ 4 large onions, thinly sliced
- ✓ 4 cups beef broth
- ✓ 1 clove garlic, minced
- ✓ salt and ground black pepper, to taste