Keep the screen awake with cook mode on the Good Food app.
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Method
step 1
Begin by halving the bagel horizontally and place under a preheated grill to toast lightly on both sides (220C/fan 200C/gas 7).
step 2
Dice the cucumber into medium sized chunks. Drain the tin of tuna and place in a bowl along with the mayonnaise, lemon juice and a pinch of salt and pepper. Combine and set aside.
step 3
Once the bagel halves have toasted, place them on a plate and scatter over the rocket leaves. Add a pinch of salt before evenly distributing the tuna between both halves of the bagel. Top with the cucumber pieces.