Slice the potatoes thinly, about 1/4-inch thick, so they cook evenly in the crockpot. Peel them if desired, or leave the skin on for extra texture and nutrients.
Dice the ham into small, bite-sized pieces if it’s not already pre-cut.
Chop the onion finely, so it becomes tender as it slow cooks.
Step 2: Make the Cheese Sauce
In a bowl, combine the condensed soup and milk, whisking until smooth.
Stir in the garlic powder, a little salt, and some pepper to taste. The sauce should be creamy and well-seasoned, as it will coat all the ingredients.