Saturday, March 01, 2014

Slow-Cooker French Onion Soup

Soy sauce, sherry, and thyme added early on helped boost flavor of our Slow-Cooker French Onion Soup recipe, but the addition of beef bones reproduced the rich meatiness of the classic. We microwaved the bones for a few minutes before placing them in the slow cooker to simulate roasting… read more


After quartering, slice the onions pole to pole for substantial slices that will hold up to long cooking. Beef bones are stocked in the freezer or meat section of supermarkets.


2 pounds beef bones (see note)
4 tablespoons unsalted butter
6 large yellow onions (about 4 pounds), quartered and cut into 1/4-inch-thick slices
Salt and pepper
1 tablespoon brown sugar
1 teaspoon minced fresh thyme
5 tablespoons all-purpose flour
3/4 cup apple butter
3/4 cup dry sherry
1/4 cup soy sauce
2 cups low-sodium chicken broth
2 cups low-sodium beef broth

1 loaf French bread, cut into 1/2-inch slices
2 1/2 cups shredded Gruyère cheese


1. COOK ONIONS Arrange beef bones on paper towel-lined plate. Microwave until well browned, 8 to 10 minutes. Meanwhile, set slow cooker to high. Add butter, cover, and cook until melted. Add onions, 2 teaspoons salt, 1 teaspoon peper, brown sugar, and thyme. Stir flour, apple butter, sherry, and soy sauce together in small bowl until smooth. Pour over onions and toss to coat. Tuck bones under onions around edge of slow cooker. Cover and cook on high heat until onions are softened and deep golden brown, 10 to 12 hours. (Cooked onions can be refrigerated in airtight container for 1 day.)

2. FINISH SOUP Remove bones from slow cooker. Heat chicken and beef broth in microwave until beginning to boil. Stir into slow cooker. Season with salt and pepper.

3. MAKE CROUTONS Adjust oven rack to upper-middle position (about 6 inches from broiler element) and heat oven to 400 degrees. Arrange bread slices in single layer on baking sheet and bake until bread is golden at edges, about 10 minutes. Heat broiler. Divide cheese evenly among croutons and broil until melted and bubbly, 3 to 5 minutes.

4. SERVE SOUP Ladle soup into bowls and top each with 2 croutons. Serve.

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