To infuse the soup with the delicious taste of well-caramelized onions, be sure to cook them until they soften and turn a deep, dark golden brown.

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Ingredients

Ingredient Checklist

Directions

Instructions Checklist
  • In a Dutch oven or other heavy 5-quart pot, heat butter and oil over medium. Add onions and garlic; season with salt and pepper. Cover and cook, stirring occasionally, until onions have softened, 12 to 15 minutes.

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  • Uncover and continue to cook, stirring occasionally, until onions are dark golden brown, 25 to 30 minutes more. (If bottom of pot gets too dry, add about 1/4 cup water, and scrape up browned bits with a wooden spoon.)

  • Add port, and cook until syrupy, 2 to 3 minutes. Stir in broths and 2 cups water; season with salt and pepper, and bring to a simmer. Serve with Cheese Toasts.

  • To make Cheese Toasts:
    Heat broiler, with rack set 4 inches from heat. Place 8 1/2-in-thick slices of baguette on a broilerproof baking sheet. Dividing evenly, sprinkle with 1 cup coarsely grated Gruyere cheese. Broil until cheese is golden, 2 to 4 minutes.

Cook's Notes

HEALTHY HABIT Satisfying soups don’t have to be high in calories or salt. Canned broth is usually low in fat, and the reduced-sodium variety still has plenty of flavor. TO FREEZE: Cool soup to room temperature. Pour into airtight containers, leaving 1 inch of space at top. Freeze up to 3 months. TO REHEAT: Thaw in microwave or overnight in refrigerator; then warm over low heat, and serve with Cheese Toasts.

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