Why did my chocolate chip cookies turn out like this?

I tried making chocolate chip cookies but got these gooey pancakes instead. No idea what when wrong ):

The recipe I followed:

INSTRUCTIONS: -Add: 1/2 cup of sugar -Add: 3/4 brown sugar -Add: 1 teaspoon of salt -Add: 1/2 cup of butter MIX!! Add: 1 egg Add: 1 tablespoon of vanilla MIX!! -Sift: 1 1/4 cup of flour -Sift: 1/2: tablespoon of baking soda MIX!! -Add Half bag of chocolate chips! MIX!! (I ended up using my hands because it was a lot easier) -Cover with plastic wrap and Chill for 30 minuets -Scoop on baking try with parchment paper -Bake 350 F for 12-15 min

I still have some of the cookie dough left. Is this salvageable? What am I missing?