Quiche with a sweet potato base

Preheat the oven to 180 ° C. Cut the sweet potatoes into thin slices and place them in a low tart mold.

Lay the slices stepwise over each other and cover the whole dish. Season with salt and pepper and half of the olive oil. Put the dish in the oven and bake for 20 minutes.

Meanwhile, beat the eggs together with the milk, pepper and salt in a bowl. Cut the onions into rings. Remove the sweet potato base from the oven and set the oven to 190 ° C.

Heat the remaining oil in a large frying pan. Fry the red onion until it is translucent and add the garlic. Now put the spinach in the pan and let it shrink. Then add the spinach to the egg mixture and add the cheese.

Pour the mixture into the cake pan and bake for / -35 minutes.