For perfect apple cubes: Stand the apple on your cutting board and cut down into four slabs; discard the core. Lay slabs, cut sides down, and cut into 1/2-inch slices, then crosswise into 1/2-inch cubes.
Potatoes are baked and then hollowed out. The flesh is combined with sour cream, milk, butter, green onions and Cheddar cheese, then topped with more cheese, green onions and bacon.