Steak crostini are the perfect appetizer for happy hours, cocktail parties, or any holiday gatherings! These easy mini baguette appetizers are topped with grilled, marinated flank steak, horseradish cream, and caramelized onions. These steak appetizer bites make great holiday crostini because your guests can build their own adventure! Put out all of the different components like horseradish spread and sliced chives and let the guests make their own perfect crostini.
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