This dough is made in a food processor, but you can make it by hand in a mixing bowl. First, combine the flour, oats, baking powder, salt and cinnamon. Combine on low speed in the food processor.
Now add the butter (it should be cold so that the crackers are crisp and flaky) and blitz again on low speed till the mixture is crumbly, with a few pea-sized bits of butter.
In a small bowl, combine the honey, vanilla and water. Pour into the food processor.
Blitz to combine and let it run on low speed until the dough forms into a ball. It will be soft but shouldn't be too wet.
Place the dough on a piece of clingfilm, pat it into a disc and wrap tightly. Chill for 1 hour.
When ready to bake, preheat the oven to 170 C. Lay out a silicone baking mat and lightly flour it. You can also just roll the dough on the kitchen counter but I find it easier to roll and transfer the crackers to the oven directly on the mat.
Divide the dough into two portions. Place one half on the floured mat and put the other half back in the fridge.
Place a large piece of clingfilm over the dough and begin rolling it out gently. I prefer doing it this way so that the rolling pin doesn't stick to the dough. Roll as thin as you can for the crispiest crackers.
Use a cookie cutter or small bowl to cut 3-inch round shapes into the dough. Peel away the scraps and set aside. The crackers don't spread while baking, but make sure there is still a small gap between each one, rearranging them on the mat if you need to.
Prick each one with a fork a few times to prevent the dough from puffing up too much in the center and to get that signature cracker look.
Slide the mat onto a tray and bake for 10 to 15 minutes, until browned on the top and edges, rotating the tray to ensure even browning. I find the sides brown faster so keep a close eye on the crackers. I like them deeply browned because they're crispier this way, but you can keep them lighter too.
Let the crackers cool and firm up on the tray, then transfer to a wire rack to cool completely.
Roll the dough scraps together and roll them out and cut again. Repeat with the second half of the dough.
Crackers will stay fresh and crispy for 4 to 5 days in an airtight tin at room temperature, in warmer climates, and longer if it's cooler. Happy baking!