What is the proper word/term/expression to describe a dish that appears to be something different I want to experiment with dishes that fool the senses. Dishes that look like one thing but taste completely different from what was visually expected (e.g. Heston's parsnip cereal)

I want to google for these kinds of recipies, but what seach terms should I use? Is there a term of art or word which describes these dishes?
I believe the most common term, especially for foods that just visually look like another food, is Trompe-l'œil.  While the Wikipedia article linked focuses on other forms of art, the word is still applied to foods.

If you google "Trompe l'œil food", you will find many examples of the term in use.

Note that Google seems smart enough to handle either "œ" or "oe".