Melt coconut oil until it is liquid.
Preheat oven, setting on convection bake or bake to 350°F/177°C.
Stir starter well before adding to bowl (it can settle out as it sits). Combine all ingredients together and mix well into a thin batter.
In the center of each of two half-sheet sized pans lined with parchment paper or a silicone mat, pour half the batter.
Tilt each pan to spread the batter out into an even, thin layer.
Place pans into oven.
After 15 minutes, the batter will firm up. Remove pans and score the batter into bite sized (1 inch or 2.5 cm) squares with a pizza cutter or dough scraper. Rotate pans and switch trays to other racks to ensure even cooking.
After another 15 minutes, rotate pans and switch trays. Break up and flip the crackers over, so that they brown evenly on both sides.
After another 15 to 20 minutes, When the crackers are golden brown, remove from oven. Break up into squares. Let cool and crisp up. Store in an airtight container in a cool dry place.