Soda Crackers

4 and 1/2 c flour (I used half whole wheat and half white)
1/2 tsp baking soda
1/2 tsp salt
1/2 c cold butter
1 and 1/2 c water
coarse or kosher salt (optional)
1/4 c sesame seeds
1/4 c finely chopped onions

Combine dry ingredients and cut in butter.
Add water, stir just till mixed, and knead on lightly floured board about three minutes.
Divide into four and roll each piece on a floured board to 1/8-inch thickness.
Sprinkle lightly with the coarse salt and press it gently, just a tad, with flat hands or the rolling pin, into the dough.
Cut into 2-inch squares and place a half-inch apart on ungreased cookie sheets.
Prick several times with a fork.
Bake in a preheated 350F oven for 20-25 minutes or till lightly browned.

I'm not absolutely crazy about these but haven't found a recipe I like better, and with the onions and sesame seeds they are tasty enough. The recipe does make quite a few and you might prefer to halve the ingredients the first time you try it.