They were used for an onion soup recipe, but not needed in the final preparation.
Chili maybe or a stew
Beef pot pie is one of my favorite. Or shred the beef and pan fry till crispy and use for carnitas.
Shred for tacos, mix with sauce for baked ziti, BBQ beef sandwiches, beef barley soup, chop and make a version of shepard's pie.
If it's been braised for three hours it should already be stew. I was thinking chili myself but a long cooked piece of beef and chili are not necessarily good friends. Work it into an adobo made from rehydrated ancho or guaillo peppers and maybe your are onto something for a burrito or taco.