"I've been making little tweaks to this family favorite for years. Prep everything ahead, then layer up the crostini right before party time. —Greg Fontenot, The Woodlands, Texas..."
INGREDIENTS
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1 French bread baguette (10-1/2 ounces), cut into 1/4-inch slices
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1/4 cup olive oil, divided
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1 pound medium carrots, grated
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2 cups water
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1-1/2 cups sugar
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1 to 2 tablespoons prepared horseradish
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1 tablespoon butter
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1 cup chopped onion
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2 cups shredded Swiss cheese
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1 carton (8 ounces) mascarpone cheese
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2 tablespoons mayonnaise
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1 tablespoon sour cream
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1 boneless beef top loin steak (12 to 14 ounces)