Garlic Herb Beef Tenderloin Roast with Creamy Horseradish Sauce



1 - 2.5 lb. Certified Angus Beef® Brand Tenderloin roast, trimmed and tied
2 tsp. dried oregano leaves
2 tsp. dried thyme
2 tsp. dried crushed rosemary
1 tsp. dry mustard
2 tsp. garlic powder
2 tsp. coarse kosher salt
1/2 tsp. fresh ground black pepper
1 TBS olive oil

For Creamy Horseradish Sauce:
1/2 cup sour cream
3 TBS reduced-fat mayonnaise
prepared horseradish, to taste
pinch of kosher salt
dash of Worcestershire sauce