The photos in the link show the original and still most common meaning in German. We mostly would combine 'Strudel' with a word designating what's in there when we mean the edible 'Strudel'. "Do you like 'Strudel'" would be a kind of unanswerable question in German. I for instance like it with apples as a dessert but not as a main meal, I like it with minced meat as a main meal but not as a dessert, I hate it at all times with cabbage. So it always would be apple-strudel, cabbage-strudel etc. Only in a context with no ambiguity we would use the simple word, like when saying "Would you like one more slice of strudel".

Wolfgang