My aunt, who is more like my big sister, makes these every year and every year we just happen to be in her house after she makes them and we just happen to finish them off/slip them into the diaper bag and steal them. Either way, I think she usually makes more after we leave.
My plan is to do my Pesach baking at some point this week, and these guys are first on the list. I am thinking I will quadruple the recipe and if we ration them, four trays should get us through the eight days.
Here's how to make them (but fair warning, they're not good for you, so don't faint when see how much sugar is involved in this experiment):
1 cup brown sugar
1 cup sugar
1 cup oil
3 teaspoons of vanilla sugar
3 teaspoons baking powder
1 cup potato starch*
4 ounces of chocolate chips
Preheat the oven to 350 degrees and grease a 9x13 inch pan. Mix the first three ingredients together and then add in the other ingredients, mixing until everything is incorporated. Pour into the pan and bake for about 35 minutes or until a toothpick comes out clean.
Let the blondies cool completely and then double wrap in aluminum foil. I'd stick the pan into a freezer bag too, just as an extra precaution and freeze 'till Pesach.
*This blondie recipe - or really any recipe made with potato starch, makes a perfect snack for erev Pesach because it does not contain any matzah or cake meal - both items that many have a custom to avoid on the day before Pesach. Hmmm, maybe I should make five trays.