Preheat the oven to 375°F(190C°). Line baking sheet with parchment paper or silicone baking mat. Set aside
Place the flour, salt, sugar, baking powder, thyme, paprika, dried onion flakes in a big bowl and mix well with a spatula.
Add in the olive oil, water and tomato puree and stir well with your spatula. The mixture will look very sticky but as you mix and knead the dough, it will be less sticky. Don't add any flour.
Flour the workspace, the rolling pin and sprinkle some flour over the dough. Roll out the dough approximately ⅙ inch (4mm) thick, 10*8 inches (27*20cm) long. Use your 1 inch round cookie cutter and cut into 1 inch (2,5)circles. Form the leftover dough into a ball and roll out and cut into circles again and repeat this step until no dough remains. Don’t use any unneeded flour when rolling out.
Place them on a baking sheet and bake for 10 minutes or until the top of the crackers are set. You can taste to decide if you should turn off the oven: when you taste it, it has to be soft but a little bit crunchy. After you turn off the oven, let them stay there for 3-4 minutes to be crunchy. It can be lightly brown from the edges but the top shouldn’t be brown. You should check your oven regularly. Remove them from the oven and let them cool on the baking sheet for 15 minutes. They will be crunchy as they cool. (If you don’t want them to be crunchy, don’t let them stay in the turned off oven.)