Masterchef Australia vs Masterchef US

I'm late and a bit backwards in discovering Masterchef, so I just finished the first US season and have now taken up watching the Australian season 3. What my question stems from, is that in the Australian version it's clear that there are clear challenges with recipes and challenges without. Now in the realm of "I've only made pasta once" or "I'm really not a baker" - this makes lots of sense to me for amateur cooks.

However in the American version - there is no mention of recipes, and particularly for the pasta/baking challenges (especially the souffle) - I find it a bit baffling. It ends up feeling a bit like contestants have had to commit the Joy of Cooking to memory. So the question is - does the American version provide the contestants recipes for some challenges and not others but just not tell the viewers?