Pre-heat the oven to 190C | Gas Mark 5.
Place the oats, soda, salt, black pepper, garlic powder, oregano, paprika, dill and chilli flakes in a food processor and blitz for 2 seconds.
Add in the sunflower seeds and butter and rub together until the mixture resembles bread crumbs.
Add the hot water and combine to form a dough.
Sprinkle some flour on a work surface and roll out the dough. Using a cookie cutter or a glass, cut out shapes and place the oatcakes on a baking tray. Bake for 20-30 minutes or until slightly golden brown.