"Our Slow Cooker Fresh Onion Soup is the reason that slow cookers were invented! It’s a no-fuss, hearty soup topped with French bread and grated Parmesan cheese. Mmmm! Find more family favorite recipes, and the stories behind them, in The Old Farmer’s Almanac Reader’s Best Recipes...."
INGREDIENTS
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1/2 cup (1 stick) butter or margarine
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3 large onions, thinly sliced
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4 cups hot water
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2 tablespoons instant beef bouillon or 6 beef bouillon cubes
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1 teaspoon Worcestershire sauce
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1/2 teaspoon salt
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4 slices toasted French bread
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1/2 cup freshly grated Parmesan cheese