01 -
Preheat oven to 325°F (163°C). Lightly grease a 9×13-inch baking dish.
02 -
In the prepared baking dish, add diced potatoes, shredded cheddar cheese, crumbled bacon, minced garlic, and chopped onion.
03 -
Spoon in full-fat mayonnaise and thoroughly mix until all components are evenly coated.
04 -
Spread mixture evenly and bake uncovered for 1 hour 30 minutes, or until potatoes are fork-tender and the top is golden and bubbling.
05 -
Remove from oven and let stand 5 to 10 minutes before serving hot.