Ingredients
Equipment
Method
Step-by-Step Instructions
- Start by greasing the inside of your slow cooker with oil or cooking spray.
- Layer 1/3 of the thinly sliced onions at the bottom, followed by a layer of potato slices and a generous sprinkling of cheese. Repeat twice more, finishing with potatoes and cheese.
- In a measuring cup, whisk together whole milk, cornstarch, yellow mustard, salt, and black pepper until smooth.
- Pour the prepared creamy sauce evenly over the layered ingredients.
- Cover and cook on high for about 3 to 4 hours until potatoes are tender and the sauce is bubbling.
- Allow to rest for about 20 minutes before serving.
Nutrition
Notes
Slice potatoes evenly using a mandoline for best results. Soak sliced potatoes in cold water for up to 12 hours to prevent browning.
