A ‘sunken burrito’ was an offering at a long-time taco place near us. It was swimming in something like enchilada sauce and melted cheese. Yours sounds similar.
The “ wet burrito” recipe is a treasure........spiced to perfection.
The cooking stages use techniques that add on flavor after flavor.....from the meat rub to the luscious filling, ending w/ the Colorado Sauce.
Interesting that the restaurant uses Colby and Jack.....not the usual Cheddar/Jack. Colby adds more creaminess I’d say.