The super-tasty topping can be made in advance, making this dish a real ‘no brainer’ when you’re tight for time. I think it works particularly well with a delectably-pretty pink Alaskan salmon fillet but the great thing about this recipe is that other fish fillets, a succulent chicken breast and/or a 'meaty' slice of tofu all benefit from the same treatment! Be experimental and play around with the ingredients dependent on what’s in the fridge. —Fiona Kirk
In a small bowl, mix the oats, parsley and lemon juice, lightly season and set aside.
Warm the oil in a small saute pan and cook the spring onions over a medium heat until soft then add the tomato puree and mix well.
Place a sheet of baking foil in a small oven-proof dish, place the salmon fillet in the middle and pull up the sides of the foil so you create an open-topped parcel.
Top the salmon with the spring onion/tomato puree mix, arrange the tomato slices on top and finally the oat mix (don’t close the parcel) then place the dish on a middle shelf in the oven and bake until cooked through (around 8 to 10 minutes). Have a peek and check that the fish flakes nicely and the juice is clear.
Remove from the oven, turn the oven off and the grill on (to a medium heat), scatter the cheese on top, grill on the lowest shelf until the cheese melts and is just beginning to brown (around 5 minutes) then with a fish slice, lift the fish onto a warmed serving plate and spoon over the cooking juices.