To a mini food chopper add the beans, onions, paprika, garlic salt, chili powder, cumin, soy sauce, and tomatoes. Process until well blended and only small pieces of the beans remain.
Place tortillas on a work surface and add the bean mixture to one side in an even layer. Don’t add too much or it'll seep out the sides.
Add a layer of shredded cheese and fold the tortilla over.
Grease the griddle or skillet with butter then preheat over medium-high heat.
When the cook surface is hot, add the tacos and cook about 4 minutes per side, or until golden brown. Flip over and cook another 4 minutes or until nicely browned.