A delicious Fillet of Beef Sandwich made with creamy blue cheese, sour cream, mayonnaise, and rare fillet of beef, perfect for using leftovers and impressing your loved ones.
1: For the dressing, mash the blue cheese with a fork and blend with sour cream, mayonnaise, Worcestershire sauce, salt, and pepper.
2: To make the sandwich, spread the bread thickly with the dressing.
3: Top the dressed bread with slices of beef and arugula, and sprinkle with salt and pepper.
4: Spread the other slice of bread lightly with butter and place it butter-side down on top of the beef.
5: Preheat the oven to 500°F.
6: Melt 2 tablespoons of unsalted butter.
7: Place the beef on a baking sheet and pat the outside dry with a paper towel.
8: Using a pastry brush, coat the beef with the melted butter and sprinkle evenly with salt and pepper.
9: Roast for 25 minutes for medium rare.
10: Remove the beef from the oven, cover tightly with aluminum foil, and allow to rest at room temperature for 20 minutes before slicing.
