The reason why pressure cooker or instant pot works well because it makes a regular 4 hour process shorten to 30 minutes. 😁 Make the juices soak in way fast.
Or another option is put the meat in a ziplock bag and pour in the salsa sauce, leave it in the fridge for an hour or more. After that, wrap it in a tin foil and bake it. Still Yummy at the end! Taste would be similar, the difference is the technique, and time spent 😄