Alas, there is no 'dedicated' single web page I can find for my other joint-top-favourite artist, Jan van Huysum, but there is an excellent 'compendium', via Artcyclopedia.
So the question you're asking must be, "If you're such a great 'Austrian', Mr. Maturin, then surely you must subscribe to the ordination of subjective preferences. It is impossible, within one moment, for any Austrian to have a joint-top-favourite artist. It must either be Pieter Bruegel the Elder or Jan van Huysum. It can't be both. So which is it? Given a 'Sophie's Choice' where you can have one man's pictures or the other man's pictures, which would you choose?"
If it was one collection or the other, then it would have to be the works of Pieter Bruegel the Elder, particularly the series on the seasons, the Tower of Babel, and the various Triumphs of Death. But given just one picture, from both collections, then it would have to be that above, of Jan van Huysum's "Fruit Piece".
So Julia Roberts, if you're out there and you want to sweep me off my feet, then don't bother yourself with no silly picture of no silly violin-playing goat. Get yourself over to the Getty Museum, instead, over there in Los Angeles, and pick up that 'Fruit Piece' for me before you get on the plane.
(Titian is third, BTW, in case you were counting)