Spaghetti Sauce with Ground Beef

Bahan-bahan (6 porsi)

• 1½ pounds ground beef
• 1 medium onion (chopped small, about 1 cup)
• 4 cloves garlic (minced)
• 1 28 ounce can crushed tomatoes
• 1 16 ounce can tomato puree
• 1 tablespoon dried oregano
• 1 tablespoon dried basil
• 1 teaspoon kosher salt
• ½ teaspoon freshly ground black pepper
• ½ teaspoon crushed red pepper flakes OPTIONAL
• 2 tablespoons fresh Italian parsley (chopped OPTIONAL)
• freshly grated Parmesan (for serving OPTIONAL)