Cheesy Baked Mashed Potatoes

slices of bacon , cooked and crumbled

large russet potatoes (about 4), peeled and cut into chunks

unsalted butter

cream cheese , cubed

of evaporated milk

kosher salt , or to taste

white pepper , or to taste

Cajun seasoning (like Slap Ya Mama ), or to taste, optional

to 2 cups shredded sharp cheddar cheese , divided