to the manufacturer’s instructions.
Step 2: Prepare the Potatoes
Peel the potatoes and slice them thinly.
Try to keep the slices as even as possible so they cook at the same rate.
A mandoline can make this easier, but a sharp knife works perfectly well.
Thin slices are important because thick potato slices may remain firm even after the rest of the casserole is hot.
Step 3: Slice the Onion
Slice the onion thinly.
Thin onion slices soften more easily and distribute their flavor throughout the layers.
Step 4: Prepare
