2Sear the steak in a hot cast iron pan until desired doneness.
3Slice the ciabatta baguette and brush with olive oil.
4Toast the baguette slices until golden brown.
5Rub toasted baguette slices with garlic cloves.
6Place sliced steak on top of the toasted baguette slices.
7Prepare the creamy horseradish sauce by mixing sour cream, horseradish, chives, apple cider vinegar, Greek yogurt, Worcestershire sauce, salt and pepper.
8Top the steak crostini with the creamy horseradish sauce and garnish with fresh chives and crushed black pepper.