Mixed beans with smoked mackerel

Ingredients (2 people)

1 tin 3 mixed beans in water, 1 tin chopped tomatoes, 1 large white onion, 2 cloves garlic, 2 fillets smoked mackerel, 1tbsp olive oil, 2tsp herbs Provence, 1tsp salt, 1tsp ground black pepper, 1/2tsp White sugar, 1tbsp tomato purée. 

Chop the onion lengthways from root to tip, remove the skin and root and thinly slice crossways in to strips. Heat the oil in a large pan and gently fry the onion for 10 minutes until softened. Crush the garlic, remove the papery skin, finely chop and add to the pan with the onions and cook for 2 more minutes. Drain the mixed beans and add to the onions along with the tinned tomatoes. Add the tomato purée, herbs, salt, pepper and sugar and and simmer gently for 10 minutes until the sauce thickens slightly. Remove the skin from the mackerel fillets by simply pulling it gently, cut the fillets in to chunks and add to the pan, simmer for a couple of minutes to heat through however be careful not to over stir as you don't want to break them up too much. 

Serve piled on to plates with crusty bread  or a crisp green salad.