- Salt and pepper pork roast. 
- Brown roast on all sides. 
- Place in a slow cooker and pour BBQ sauce to cover. 
- Simmer on low for 8 hours or on high for 4 hours. 
- Preheat oven to 350 degrees Fahrenheit. 
- While the oven is preheating, shred BBQ pork with two forks. 
- Mix instant mashed potatoes according to package instructions. 
- Layer mashed potatoes evenly at the bottom of a 9x9 casserole dish. 
- Add one-third of the cheese in a layer on top of the mashed potatoes. 
- Add about two cups of the pulled pork in a single layer in the casserole dish. (Can use more if desired.) 
- Top the casserole with a mixture of the remaining cheese and the crushed BBQ Pringles. 
- Bake casserole for about 12-15 minutes or until cheese is bubbling.