S signed up to bring food to the 4-H Community Club meeting today. Yesterday evening we were tired enough to get creative with our cookie making. I have an old recipe written down on a lunch bag taped to my fridge. I actually have three recipes on that paper bag, but the only one I use regularly is my Christmas cookie recipe. The bottom one is probably fancy, since it involves powdered sugar and an egg yolk, but it is too obscured to fully read.
Instead, S and I decided to find out what the middle set of ingredients would create. I'm pretty sure I wrote it down back when I regularly spoke with my sister on the phone. So it's easily over 15 years old.
1 1/2 cups salted butter
2 cups granulated sugar
4 eggs
1 tsp vanilla
2 tsp baking powder
5 cups flower
Bake at 400° 6-8 mins.
There was no other information.
I realize we could have played it safe by halving the recipe, but if we were wise enough to take that precaution, we probably wouldn't have been adventurous enough to try a random recipe in the first place.
I did mention how tired we were, right?
So, we ended up with a very generous amount of cookie dough with absolutely no direction as to the size or shape of the pre-cooked cookie we were supposed to end up with on the pan heading into the oven.
We decided to test with a small batch rolled into balls for our first pan. We cooked them seven minutes at 400°. They weren't cooked through, but the bottoms were pushing past golden brown, so we flipped them and cooked for 2 more minutes.
They were ok, but not quite good enough to want to make more in that exact way.
Instead, we lowered the temperature to 375°, raised the pan rack to third from the bottom, instead of second from the bottom*, and turned them into thumb cookies.

We used blackberry jam.
The conclusion was, this is now our thumb cookie recipe. Use all the ingredients as mentioned above, but cook at 375° for approximately 11 minutes or until the jam is burbling. Also, when pressing in your thumb to make the indent for the jam, only do four or five at a time, fill with jam, then repeat the process till finished. Otherwise the indents start to puff out and get smaller before you can get the jam in place.
*I thought it worth mentioning, this oven has 5 rack slots. If this were a 4 rack slot oven, then second from bottom would probably be the better setting. We're mostly aiming for the center height.