These vegetarian burgers from Claire Thompson are very good, though you do have to be careful they don’t break up when you are frying them. They benefit from an extended period to firm up in the fridge. Serve with your choice of sour cream, mayonnaise, aïoli, pickles (, lettuce leaves, goat’s cheese or feta. On rye bread or in a brioche roll ….
Cook the onion in a small saucepan with the olive oil until soft and translucent, about 8–10 minutes, then add the garlic and cook for 2 minutes more, until fragrant. Remove from the heat and set to one side.
Combine the grated beetroot, beans, mustard, spices, dill, oats/breadcrumbs and seasoning in a bowl. Use your hands to work the mix together until cohesive and easily shaped.
Shape the mix into burgers about 2cm thick and place them on a tray or plate. Put them into the fridge to firm up for an hour or so.
Heat a large non-stick frying pan with enough oil to cover the surface of the pan and about 1cm deep, and fry the burgers over a moderate heat for 2–3 minutes on each side, until crisp and the interior is hot.