Place the vegetables on a baking tray lined with baking paper, sprinkle with salt and bake in the middle of the oven at 225 degrees celsius for about 20 minutes.
3
Insert the frozen bread rolls in the oven when there are eight minutes left for the vegetable fries. Make sure the rolls are heated throughout.
4
Add half of the roasted beets to a food processor along with lentils, garlic, half an onion, coriander and salt.
5
Take half of the bread rolls, tear them apart and add to the food processor. Mix until a smooth dough forms.
6
Shape the beet dough into burger patties and fry them in a frying pan on medium-high heat with some oil or butter.
7
Serve the burgers and use the rolls as buns. Top with rocket, onions, a dollop of sour cream and root vegetable fries.