14 minutes ago, Tropicalsenior said:I don't know whether this will help but I have read that cakes that have a thicker batter are better to bake in loaf pans than ones with thinner batter. The ones with thinner batter are more apt to fall.
I agree with this. I'd say most bundt cake recipes fall into that sturdy category and work well in loaf pans.
I've made a bunch of cakes from the book Snacking Cakes. All are written for 8 or 9 inch squares but can be doubled and baked in a bundt pan so @Heidi's suggestion is also a good one.