In our first experiment, the dough was a little softer than what we were used to making; threw me off. This might have been the root of our issue. We were trying cook liquid dough. I usually like to let the dough sit in the fridge, but in this second experiment, we let the dough sit overnight to firm. Using my go-to recipe for chocolate chip cookies, we added in the cornstarch and used just the yolk from the second egg. Normally, we’d use the 2 whole eggs, but using just the egg yolk without the whites will make your cookies thicker while the cornstarch allows them to be fluffy.

Ingredients
I like to store my baked cookies in a container in the fridge so the moisture locks in. Hope you enjoy them as much as we did!
I loved these. I will add a bit more flour next time (1/4-1/2 cup)as mine were a bit flat. Not sure if it has anything to do with our Crazy Canadian weather!!!
They were so delish. I doubled the recipe and added extra chocolate chips. Thanks for this recipe! It’s a keeper.
Thanks Crystal! It’s always good to make giant balls of dough, and try to put the balls in the oven while they are still kind of cold. I know some readers have found the more the dough sits out they get a little flat from being sticky. Glad you love them! Thanks for commenting!
Thank you for this amazing recipe! My entire marriage my cookies have never come close to my mother-in-laws “perfect” chocolate chip cookies. After making these my husband and son keep telling me these are the best cookies they have ever had! I can not keep them away from the cookie jar!
I doubled the recipe but followed it exactly. I let the dough sit out 10min to soften up but it was still really hard. i used an ice cream scoop to make fairly large cookies so I only baked 8 at a time on one sheet(I wanted to babysit them so they would not burn). I did notice after the 3rd sheet baked the dough was getting soft and sticky.
Soft+sticky=flat cookies
After putting dough back in fridge to harden the cookies went back to being picture perfect. They seriously could be in a food magazine! They are still soft and chewy 3 days later! Thank you so much for this fabulous recipe!!
Thank you Rhiannon! It’s good to know about the dough staying out longer. We only make about 12 of them total, so they are not sitting out very long, but in your case of the doubled batch, they’d be out a long time. Chocolate chip cookies are my favorite cookie, and this was a god sent accident! Thanks for commenting!
So I just made these, they are really good but look nothing like the pictures. The ones in the pictures have brown bottoms and don’t look as gooey as mine. I baked them for 13 minutes. Just wondering if it would be fine if I baked them even a bit longer.
Hi Emily! Thanks for commenting. Our oven sucks, like it’s the worst. It cooks faster on the bottom than the top, so we always end up with burnt cake/pie/cookie bottoms and gooey insides. We have to go by the bottoms of our cookies. Preferably, I would have taken the cookies out sooner so the bottoms weren’t as brown. I love ooey gooey cookies, so yours are probably delicious. If you ever make these again, try baking them for a little bit longer to see what happens. Did you let them sit on the cookie sheet after taking them out?
OMG these cookies look delicious!!