Heat 1 tablespoon Olive oil in a large sauce pan over a medium heat. Add 1 Red onion, 2 Garlic clove, 1 Red bell pepperand 1 Yellow bell pepper and cook for 2 minutes, stirring continuously.
Add 400 g Chopped tomatoes, 2 tablespoon Tomato puree, juice of 0.5 Lemon and 8 Cherry tomatoes to the pan and stir well and cook for a further 3 minutes.
Season with 1 pinch Sea salt and ground black pepper and add 15 g Fresh parsley and 15 g Fresh basil and stir.
Add the sauce to the bottom of a baking dish and top with 260 g Cod fillets and scatter 25 g Olives on top. Put the dish in the oven for 20 minutes, or until the fish is cooked though.
Scatter extra herbs on top and crumble over 40 g Feta. Serve with crusty bread and butter.
Notes
Swap with cod for haddock, tuna, salmon or king prawns if you want to use a different fish. Or you could use grilled chicken or tofu instead.
Bulk the fish bake out by adding potatoes, rice, quinoa for a more filling meal.
If you didn't want to use feta, then you could add cheddar on top which would be more melty. You could even then pop it under the grill to get it nice and crispy.