Can you help me find a recipe for Beany Beanwiches?

My Grandmother passed about 14 ago and my Dad has all of her old recipe cards and books. He was really interested in finding this one in particular and it looks like it's missing.

What he remembers is toasted half hamburger buns, beef, beans, BBQ sauce, shredded cheddar cheese and back into the oven for a bit. I think it's a bit like a sloppy joe but thicker.

She had a bunch of recipes clipped from newspapers, magazines and the back of canned or boxed food which was stapled or taped to index cards. She has a bunch of recipes on cards written with a typewriter too. She was born in the 20's. Hope this helps. Thanks in advance