- 680 grams 1 1/2 lb Ground Beef (85/15)
- 1/4 yellow onion finely chopped
- 150 grams 2/3 cup seasoned dry breadcrumbs
- 80 ml 1/3 cup whole milk
- 1 large egg lightly beaten
- 1/2 teaspoon Kosher salt
- 1/4 teaspoon coarse ground black pepper
- 907 grams 2 lb potatoes, peeled and cut into 2.5 cm (1 inch) chunks
- 75 grams 1/3 cup unsalted butter
- 120 ml 1/2 cup whole milk
- 1 teaspoon kosher salt
- 1/4 teaspoon coarse ground black pepper
- 60 grams 1/2 cup bacon bits, cooked and crumbled
- 115 grams 1 cup cheddar cheese, shredded