Let's cook.
Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper.
In a large bowl, whisk together the fine semolina, all-purpose flour, granulated sugar, baking powder, and salt until well combined.
Pour the melted butter, orange blossom water, and orange zest into the dry ingredients. Mix with a spoon or your hands until a soft, cohesive dough forms.
Take small portions of the dough, about 1 tablespoon each, and roll them into balls. Gently flatten each ball slightly with your palm.
Arrange the flattened dough balls on the prepared baking sheet, leaving about 1 inch between them.
Bake for 15-18 minutes, or until the edges are lightly golden. The cookies will still be soft when hot but will firm up as they cool.
Remove the baking sheet from the oven and let the cookies cool on the sheet for 5 minutes before transferring them to a wire rack to cool completely.
Once cooled, dust the cookies generously with powdered sugar before serving.
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