The cookies that I have been making have been falling flat almost like there's too much butter.?!
Answers: I have been making them the same for the last 20 years. What's the problem?
Changes in temperature and/or humidity can sometimes mess with recipes. Also, if your baking soda or baking powder is old, it won't work as well. Since those are the two primary ingredients for making cookies rise, you might want to try replacing them and seeing if that works.
what kinda cookies
i agree with what the last person said, you also want to be sure that if your making cookies that call for a lot of butter don't grease your cookie sheet other wise you will have messy greasy cookies.
There are four main reasons why cookies may spread too thin:
1) The butter was too soft at the time when it was added to the dough
2) You did not have enough flour in the dough
3) The dough was too warm at the time it was put in the oven
4) The baking sheet was too warm when the cookies were placed on it.
Fiddling with any of these four factors may hep your cookies from spreading thin and flat.
please check your oven temp as this could be a reson for flat cookies, outside of cookies not getting heated quick enough
Something obviously changed .Oven calibration ? Different manufacturer of ingredients? Old leaveners? There is no magic , baking is science and the answer is out there. Good Luck.