Super Easy Canned Tuna Pasta - Serving Dumplings

Ingredients

• 14 ounces linguine
• 1 tbsp unsalted butter
• 3 garlic cloves (minced)
• 1 small yellow onion (finely chopped)
• 1 tsp salt
• 1 tsp black pepper
• 1 tsp dried oregano
• ¼ tsp chili flakes (more to taste)
• 1 tbsp lemon juice
• 1 tbsp chopped parsley (more for serving)
• 15 ounces canned tuna in oil (drained, oil reserved)