1. – Preheat oven to 375°F (190°C).

2. – In a large bowl, combine the flour, baking powder, and salt. Cut in the butter until the mixture resembles coarse crumbs.

3. – Add the milk and one egg, and stir until a soft dough forms.

4. – Roll the dough out into a rectangular shape on a lightly floured surface.

5. – Arrange the spinach leaves and sliced ham over the dough, leaving a 1-inch border.

6. – Starting from the short end, tightly roll up the dough like a jelly roll.

7. – Place the roll seam-side down on a baking sheet lined with parchment paper.

8. – Beat the remaining egg and brush the top of the roll.

9. – Bake for 25-30 minutes, or until the crust is golden brown.

10. – Allow to cool for 5 minutes before slicing and serving.