(Photo: Holly Lynn Ellis)
A toad-in-a-hole is a dish in which a hole is cut inside a slice of bread and then an egg is fried or baked inside that hole.
(Yes, I know from previous discussions that some people insist on referring to this dish as an "egg-in-a-basket" or other eccentric appellations. But I grew up in the South where I learned to speak the English language properly. I will continue to do so.)
Endless Simmer offers this unique take on the dish. Its chefs hollowed out spots on a pork tenderloin, then baked it. After it was mostly done, they cracked open 3 eggs and placed them in the holes. After 15 more minutes of baking, this was the delicious result.
At least this is true for the UK, Australia and most Commonwealth countries
Google image search results - http://bit.ly/1Q5QqpB
Maybe your egg version is a regional thing?