Spaghetti with Tuna and Capers

Details

Ingredients

• 1 tablespoon extra-virgin olive oil
• 1 small red onion, thinly sliced
• 1 (5 ounce) can tuna packed in olive oil, undrained
• 1 tablespoon capers, drained
• ¼ teaspoon crushed red pepper flakes
• ½ pound spaghetti
• ½ tablespoon chopped fresh parsley