Arrange half of the tomatoes in a single layer over the pre-baked crust.
Gently pour the corn egg mixture on top of the sliced tomatoes and sprinkle the parsley.
Place another layer of tomatoes over the mixture, sprinkle the rest of the cheese and panko.
Bake for 35-40 minutes until the filling is set.
Remove tarts from the oven and let cool for 15 minutes. Remove rings and transfer tarts to a wire rack to cool for before serving.