Line a small baking dish with 1/3 of the cheese, spread half of the pretzel sticks on top and cover with half of the ham. Then layer 1/3 of the cheese on top again, place the second half of the pretzel sticks on top and spread the second half of the ham on top. Finally, cover with the rest of the cheese.
Place in the cold oven and bake at 200 ° C for about 20 minutes until the cheese has melted and browned.