In a mixing bowl combine flour, baking powder, and rosemary. Then add in the olive oil and water. Mix with a large wooden spoon until it comes together and knead with your hands until it's a smooth dough. Add more flour if the dough is too sticky. Add more water if it's too crumbly.
On a lightly floured parchment paper, roll out the dough as thin and even as possible. Use more flour if you need to. Add ground salt on top of the crackers and roll them into the dough a bit.
Cut it with a pizza cutter length- and widthwise into individual crackers. Carefully pull the parchment paper with the crackers onto a baking sheet.
Bake them in the oven for about 12 minutes until they get crispy. Let them cool off a bit before digging in. They're delicious with homemade hummus.
Notes
To store them: Let them cool off completely, then put them in an air-tight jar. This way they should stay crispy and delicious!