Combine flour and salt in a bowl and set it aside.
In a mixing bowl, beat butter and sugar until smooth and creamy. Beat in vanilla extract, orange zest until well combined. Scrape the side of the bowl with rubber spatula.
Gradually mix in the flour and do not over mix. Divide dough in half, transfer onto two sheets of plastic wrap and form into discs. Chill the dough in fridge for 2 hours.
Line a baking sheet with parchment paper or silicone mat and turn on the oven to 300°. On a well floured surface roll out the cookie dough in ¼ inch thickness. Use 2½ inch cookie cutter to cut out cookies.
Line cookies 1 inch apart on a baking sheet and bake for 22-25 minutes. When cookies are done baking, let cookies cool completely. Once cookies are cooled, use a fork to drizzle orange blossom glaze over the cookies.