Simon;
More water in the dough (higher absorption) will give you a crispier crust, but since you used the operative word “cracker”, I will assume you are looking for a cracker type crust chatacteristic. To get that you have two options. The first is to reduce the dough absorption to something in the 35 to 40% range (exact amount will be determined by your flour), mix the dough in low speed just until it comes together, forming a dough, then scale and ball (the dough balls won’t be pretty but don’t worry), wipe the dough balls with oil and refrigerate 24 to 48-hours, sheet the dough to size (this dough must be formed by sheeting), and trim if necessary. The other approach is to use the cracker crust dough formula that I have posted in the RECIPE BANK. This makes a great, cracker crust pizza, just don’t over mix the dough.
As for a dough without yeast, that is an option too, but the crust must be parbaked to achieve the desired cracker characteristic. Use your standard dough formula (without the yeast), reduce the absorption to 45%, mix the dough just until it comes together, scale and ball, cover with a sheet of plastic to prevent drying. Allow the dough to hydrate for about 2-hours, then form into pizza skins by passing the dough through a sheeter/roller to a finished thickness of about 1/8-inch, cut the dough to desired diameter, place on a screen and parbake at 400F until the crust is just set. The crusts can then be inventoried for later use, or then can be dressed and baked as a regular pizza right away.
Tom Lehmann/The Dough Doctor