The Perfect Cast Iron Ribeye with Chimichurri Sauce

Ingredients

• 2 12 ounce Ribeye or New York Strip Steaks (1" or thicker)
• 2 tablespoons unsalted butter
• 1/2 teaspoon kosher salt, to taste
• cracked black pepper, to taste
• 1 cup firmly packed fresh cilantro leaves
• 1 cup firmly packed fresh Italian (flat-leaf) parsley leaves
• 1/4 cup white wine vinegar
• 3 cloves garlic, cut up
• 1/2 teaspoon kosher salt or salt
• 1/2 teaspoon ground cumin
• 1/2 teaspoon crushed red pepper
• 1/2 cup olive oil