Slow-Roasted Top Sirloin with Creamy Horseradish-Herb Sauce | Savory

Ingredients

• 1 (1/2 oz) pkg Nature's Promise® Organic Roasting Blend (Rosemary, Thyme and Parsley)
• 4 cloves garlic, minced
• 1 (3- 4 lb) top sirloin
• 1 tbsp olive oil
• 1 cup fat-free sour cream
• 1/2 cup nonfat Greek yogurt
• 1/3 cup prepared horseradish
• 1 tsp lemon juice
• 3/4 tsp dry mustard
• 2 tbsp chopped chives, plus more to garnish