Grilled Rib Eye Steak with Italian Salsa Verde

Ingredients

• 2 tbsp butter
• ¼ tsp Red pepper flakes
• 1 tsp lemon zest
• 1 tsp salt
• 2 tbsp capers, drained
• 1 cup Flat-leaf parsley, stems removed
• 2 tbsp red wine vinegar
• 2 anchovy fillets minced
• 1 tsp black pepper
• 3 Garlic cloves, minced
• 1/2 cup Extra-virgin olive oil
• 2 lbs rib eye steak
• Salt and pepper to taste
• 2 tbsp lemon juice