Preheat oven to 425F.
Combine water and yeast in a large bowl and stir with a wooden spoon until combined (30 sec- 1 min).
Stir in salt and brown sugar for another 30 sec.
Add flour one cup at a time until no longer sticky.
Turn out dough on to lightly floured surface and knead for 3 minutes.
Roll out dough to a little bit larger than your pizza pan.
Place on pan and fold over dough to make crust. You may need to cut off some excess dough so you're crust isn't too thick.
Spread cheese soup around pizza, not including crust.
Top with 1 1/2 cup cheese, then pepperoni and lastly top with last 1/2 cup of cheese.
Brush crust with butter and sprinkle sea salt on top.
Bake for 15-17 minutes until crust is golden brown.