Heat 1 tbsp olive oil in a large fry pan on medium heat

Add the onion, garlic and herbs to the fry pan and stir fry for 5 minutes or until softened

In a large bowl, combine lentils, egg, oats, flour, tomato paste and fried onion mix

Divide the mixture into four and form each into a ball

Heat the same fry pan to medium and add 1 tbsp olive oil

Place each ball in the fry pan and gently squish to form a patty

Fry both sides for 5 minutes or until browned

Slice the buns in half and assemble the burgers – bottom bun, tomato, cucumber, lentil patty, beetroot, lettuce, top bun.