Level 45 recipes unlock at expansion 13-positive this time ,but save your onions when you're close,2 of the recipes require them
Only these 3 recipes are locked by expansion. I'm already level 49 and can confirm no other recipes are locked this way, and I'm waiting to go for expansion 12 once I get enough nails.
Heads up, nice "surprise" on the experience needed to level up once you get to level 49...! Looks like I'll never get to level 56 to get the 21st counter-top...