Warm a non-stick skillet over medium heat. Lay the flatbread or tortilla down on the skillet. Sprinkle half the cheese on one side. Then top with the spinach, beets, rest of the cheese and rosemary.
1 flatbread, 1 oz mozzarella cheese, Handful of baby spinach, About 80g of beets, Pinch of dried rosemary
Fold over and press. Cook 1-2 minutes until crunchy, then carefully flip.