I am looking for a recipe for a nacho meat that is sweet tasting

If this was at a ballpark, is it possible they are using pulled pork in a barbecue sauce?

Okay I did the link wrong but google picadillo and there are several recipes online.

I would think for sweet you might want to use raisins like for a picadillo. Here is a recipe from the NYT. http://cooking.nytimes.com/recipes/1016814-picadillo. The other way would be to use a barbecue sauce mixed in after you have browned the meat with onion and whatever else you want to use.

I don't have an exact recipe, you can look up some recipes on Food52 or on line (pioneer woman has a good one) and just eliminate the heat part like the chili powder and add some sweet. I assume when you say spicy you mean heat. Sorry I son't have exact measurements but here is how I would do it , you will have to taste as you go. for a lb of ground beef , I would dice and saute a small onion till soft and a little browned, add the meat, salt & pepper, brown the meat , pour off the excess fat . add some brown sugar, some honey , some cumin to taste,, garlic powder, some smoked paprika for a little warmth ,add a small can of diced tomatoes , you can add beans also if you like. Add some chopped fresh cilantro at the very end to taste and squeeze some lime juice on it. Hopefully that helps unless someone comes up with a more detailed recipe. good luck and let me know how it turns out.

I have had empanadas with a sweet meat filling, and if my memory serves me correctly, the filling was made from ground pork, raisins, nuts (not sure what kind, though), and mincemeat.

It was cooked down with cinnamon, nutmeg, and a boatload of other spices, I'm sure, but it tasted and looked like it was cooked together in a thick sauce.

I don't know if maybe this would help guide your search, but it's worth a shot! Good luck!