French Onion Soup Gratinee

Name: French Onion Soup Gratinee
Yield: Serves 6
Cuisine: French
Ingredients: 2 tablespoons, unsalted butter; 5 , medium red onions (about 3 pounds), sliced thin; , Table salt; 6 cups, low-sodium chicken broth (canned); 1 3/4 cups, low-sodium beef broth (canned); 1/4 cup, dry red wine; 2 sprigs, fresh parsley leaves; 1 sprig, fresh thyme; 1 , bay leaf; 1 tablespoon, balsamic vinegar; , Ground black pepper; 1 , baguette, cut on the bias into 3/4-inch slices (2 slices per serving); 4 1/2 ounces, Swiss cheese, sliced 1/16-inch thick; 1 1/2 ounces, grated Asiago cheese (about 3/4 cup)

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Appears in Cook's Illustrated January/February 1999

SERVES6

TIME1¾ hours

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WHY THIS RECIPE WORKS

To make a better, quicker onion soup recipe, we created a "cheaters" broth with canned beef, chicken broths, and wine. We chose red onions for subtle complexity and nuance, and caramelized them for maximum flavor. To prevent the c...

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