Delicious Ravioli with Pistachio Pesto - Taste Like Magic

Ingredients

• 3 ounces pistachios
• 1 ounce grated pecorino
• 2 tablespoons lemon juice
• 1/4 teaspoon salt
• 1 teaspoon black pepper
• 1/4 cup basil leaves
• 6 tablespoons olive oil, divided
• 1 tablespoon unsalted butter
• 2 garlic cloves, minced
• 1.3 pounds ravioli with your favorite filling
• Crushed red pepper flakes, for serving