Preheat the oven to 210c. Wash the sweet potatoes, cut into wedges and put on to a baking tray. Put the tomatoes on a separate baking tray lined with greaseproof paper. Season tomatoes and sweet potatoes with salt and pepper, give each a drizzle of olive oil and pop in the oven. They will cook in about 30 minutes.

For the sauce, mix all the ingredients and put to one side until needed.

In a bowl crush the crackers and seeds together until no large bits of cracker remain. Add the turkey, mustard and honey with a dash of salt and pepper and mix thoroughly to combine. Form into four burger patty shapes.

In a large frying pan, add a little oil and use a piece of kitchen towel to wipe it around the pan so there is a thin coating. Fry the burgers for around 9 - 12 minutes, flipping every minute until cooked through.

Meanwhile shred the lettuce and use it to line four bowls. Add the tomatoes and potatoes from the oven, top with a burger and serve the dressing on the side.