Directions:
- Peel and thinly slice the onions by hand or in a food processor. Put in the slow cooker and toss with olive oil. Cover and cook for 9 to 10 hours on High.
- Add both the broths and Marsala, if using; add no water or salt. Cover and continue to cook on High until hot, 15 to 30 minutes.
- Meanwhile, preheat the oven to 400 degrees F. Put the bread slices on a baking sheet and brush with olive oil or leave plain. Bake until golden brown around the edges, about 10 minutes. Set aside.
- Ladle the soup into individual ovenproof soup bowls and place on a baking sheet. Top each bowl full of soup with a toasted bread slice and cover with a slice of the Gruyere. Adjust the oven rack to comfortably fit the bowls under the broiler with at least 4 inches to spare. Turn on the broiler and slide the soups under the flame; broil until the cheese is melted and bubbly, 1 to 2 minutes.
Nutrition Facts
| Amount Per 1 Serving | |||
| Calories | 445.23 Kcal (1864 kJ) | ||
| Calories from fat | 285.56 Kcal | ||
| % Daily Value* | |||
| Total Fat | 31.73g | 49% | |
|---|---|---|---|
| Cholesterol | 41.58mg | 14% | |
| Sodium | 338.44mg | 14% | |
| Potassium | 217.86mg | 5% | |
| Total Carbs | 24.45g | 8% | |
| Sugars | 0.8g | 3% | |
| Dietary Fiber | 2.73g | 11% | |
| Protein | 15.73g | 31% | |
| Vitamin C | 2.5mg | 4% | |
| Iron | 1.1mg | 6% | |
| Calcium | 416.4mg | 42% | |
| Amount Per 100 g | |||
| Calories | 227.33 Kcal (952 kJ) | ||
| Calories from fat | 145.81 Kcal | ||
| % Daily Value* | |||
| Total Fat | 16.2g | 49% | |
|---|---|---|---|
| Cholesterol | 21.23mg | 14% | |
| Sodium | 172.81mg | 14% | |
| Potassium | 111.24mg | 5% | |
| Total Carbs | 12.48g | 8% | |
| Sugars | 0.41g | 3% | |
| Dietary Fiber | 1.4g | 11% | |
| Protein | 8.03g | 31% | |
| Vitamin C | 1.3mg | 4% | |
| Iron | 0.5mg | 6% | |
| Calcium | 212.6mg | 42% | |
* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.
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