Preheat oven to 425°F and mill flour.
Combine flour, sugar, salt, baking powder, and ground cinnamon in a large bowl and stir.
Add cold cubed butter and incorporate into the flour mixture using a pastry blender. The mixture should resemble sand.
Add honey, vanilla, and 3 tablespoons of water. Do not add all of the water yet. Stir until combined and then use your fingers to combine.
If the mixture holds together well when pinched there's no need to add more water. If not, continue adding water 1 tablespoon at a time until the dough holds together when pinched. You're not looking for a sticky dough, but you do want it to hold together.
Turn the dough out and knead it until dough is smooth.
Divide, shape into 2 logs and wrap in plastic wrap.
Chill for 20 minutes.
Remove plastic wrap and place the dough in between 2 large sheet of parchment paper. Roll using a rolling pin a large rectangle forms and the dough is about 1/8th of an inch thick.
Remove the top piece of parchment and using a pizza cutter, cut the dough into squares. Poke the squares using a fork to prevent puffiness and place the sheet of parchment paper on a baking sheet.
Bake for 15-20 minutes
Remove and cool on a wire rack. Store airtight.