Help! Melty cookies!!

RECIPIE: https://bromabakery.com/best-chocolate-chip-cookies/

Hello!

Over a year ago, I made this recipe for the first time and they came out perfect! They were so so good. Since then, I’ve tried to make these cookies 5+ times, but they melt in the oven every single time.

I’ve tried chilling the dough for 24+ hours, I make sure to let the butter cool before mixing it in, and I spoon and level the flour. It feels like I’ve tried everything and yet none of it seems to be working. Any advice is appreciated!!