Peppercorn-Crusted Roast Beef (Crowd Cow)

Ingredients

• 3 lbs sirloin roast (can also use top round or rump roast)
• 1/2 tbsp garlic powder
• 1 tsp mustard seed powder
• 1 tsp turmeric
• 1/2 tbsp paprika powder
• 1/4 tbsp chile powder
• 3 sprigs thyme, leaves removed
• 1 sprig rosemary, leaves removed
• 1 tbsp fresh cracked black pepper
• 1 tbsp cracked Szechuan peppercorns
• 8 sprigs rosemary, leaves removed and chopped
• 1 tbsp kosher salt
• 2 tbsp olive oil