Toast the flour
Preheat the oven to 325°F (165°C). Spread the flour on a baking tray. Bake for 15–20 minutes, stirring once or twice, until lightly golden. Let it cool completely.
Mix dry ingredients
In a large bowl, combine the cooled toasted flour, almond meal, powdered sugar, cinnamon, and salt. Stir until evenly mixed.
Add butter
Add the softened butter to the bowl. Use your hands to gently press and mix until a soft, crumbly dough forms.
Shape the cookies
Take small portions of dough and gently press into round or oval shapes about 1 inch thick. Place them on a lined baking tray.
Bake
Bake at 325°F (165°C) for 15–18 minutes. The cookies should stay pale and just set, not browned.
Cool and dust
Let the cookies cool completely on the tray. Once cooled, dust generously with powdered sugar before serving.