You could mix them with whole eggs for omelettes, scrambled eggs, stratas etc.
Check out this site .... it's a great resource for anything egg!
http://www.getcracking.ca/
I used their recipe search and just put in egg yolks ... and got 4 recipes
http://www.getcracking.ca/fridge_res...s+Get+Cracking
Have FUN ... learning about everything egg!!