Boil, peel and slice as said above, but then salt and sear both sides in a blazing hot cast iron pan. Better than rib eye. If you dice that, it makes the best tacos too.
Instapot with a little beef broth, onions, spices, etc. let cool till meat shrinks away and peel and slice. Best roast beef ever! If you can find a veal tongue, they melt in your mouth
I cook beef tongue in the slow cooker with garlic and onions. When it is fully cooked peel it then either eat it the way it is or I like to put it on the grill for a few minutes on each side.
Boil it. Make sure to get the membrane that covers the tongue removed once it’s done boiling. Then slice it up, I put a little butter on the saltine, then the meat, then salt and pepper. The flavor is good, just gotta get over it being a tongue.
Beef tongue is good. I make it and just say it is beef when I am asked what I am feeding people. Lots of good suggestions above. Just make sure to peel it. You can also cut off a 1/8 from it before you cook it. This is easer when it is still a little frozen. They come out great from the smoker.