Beef and Horseradish Sauce Sandwich (Ina Garten) Recipe - Details, Calories, Nutrition Information |

Ingredients

• 2 to 3 lb fillet of beef, trimmed and tied
• 1 tbsp unsalted butter, at room temperature
• 1 tsp dijon mustard
• 2 tsp kosher salt
• 2 tsp coarsely ground black pepper
• 1 loaf health or 7- grain bread
• mustard horseradish sauce , recipe follows
• 1 bunch arugula
• kosher salt
• freshly ground black pepper
• unsalted butter at room temperature
• 3/4 cup good mayonnaise
• 1 1/2 tbsp dijon mustard
• 1 tbsp whole-grain mustard
• 1/2 tbsp prepared horseradish
• 2 tbsp sour cream