Boil noodles until just tender, drain and set aside.

Sauté onion in olive oil until soft, add garlic and cook 30 seconds.

Stir in drained tuna and frozen peas, heat through.

Toss noodles with tuna mixture, Parmesan, and yogurt. Season with salt and pepper.

Spoon into a casserole dish and bake at 375°F for 12–15 minutes until warm and slightly golden.