Preheat the oven to 350 °F.
Combine the all-purpose flour, baking soda, salt, and Speculaas spice mix in a bowl.
240 g all-purpose flour, 1 tsp baking soda, ¼ tsp salt, 3 tbsp Speculaas spice mix
Cream together the butter and the sugar until fluffy in the bowl of a stand mixer. You can make this dough without a mixer; it will just take a bit more time.
160 g brown sugar, 113 g butter
Slowly add in the flour and mix the ingredients together. They should resemble beach sand
Mix in the orange zest.
½ tsp orange zest
Add 1 tablespoon of milk and mix. Add the second tablespoon of milk and then mix slowly until a dough forms.
2 tbsp milk
Wrap the dough in a cloth or in plastic and chill in the refrigerator for about an hour or longer.
Rollout the dough onto a floured surface to about 1/8th inch / 3mm thick
Cut the cookies out with your favorite cookie cutters and lay sliced almonds onto the dough to make a design.
sliced almonds
Bake for about 12 minutes or until crispy.
Allow them to cool on a cooling rack before serving them.