Spaghetti Amatriciana Recipe | Food Network

Ingredients

• 1/4 cup olive oil
• 2 ounces guanciale, diced (or good quality bacon or pancetta)
• 1 red onion, chopped
• Kosher salt
• 2 cloves garlic, minced
• One 28-ounce can crushed tomatoes
• 2 tablespoons Calabrian chile paste or 1 teaspoon crushed red pepper flakes
• 1 pound dry spaghetti
• 2 tablespoons grated Pecorino-Romano, plus more for serving
• 1 tablespoon unsalted butter