Saucy fish with crunchy topping
- Drain tuna in spring water and combine with pasta-bake sauce. Divide mixture among four, one-cup-capacity ramekins. Place flour in a bowl.
- Dice butter and mix with a knife into flour until a crumb consistency. Mix in mustard, walnuts, salt and ground black pepper.
- Sprinkle mixture over fish in ramekins. Bake at 180 degrees C for 30 to 35 minutes or until topping is cooked and fish mixture hot.