Add the chopped onions and green bell peppers (if using) and cook until softened.
Step Three
Add the diced potatoes to the skillet and stir until combined.
Step Seven
Remove the lid and sprinkle the shredded cheese over the top of the casserole.
This hamburger casserole recipe is an easy and comforting meal that is perfect for any night of the week.
Cheesy hamburger casseroles are simply the best.