Description

This Crock Pot Scalloped Potatoes recipe features tender Yukon gold potatoes layered with onions and white cheddar cheese, cooked slowly in a creamy milk sauce infused with mustard and seasonings. The slow cooker method creates a comforting, golden bubbly dish perfect for a cozy side or hearty meal.

Ingredients

Scale

Potatoes and Vegetables

3 lbs Yukon gold potatoes (about 6, sliced 1/8″ thick)
1 onion (thinly sliced)

Sauce

3 cups whole milk
3 Tbsp heaping cornstarch
2 Tbsp prepared yellow mustard
2 1/2 tsp salt
3/4 tsp black pepper

Cheese

8 oz white cheddar cheese (grated)

Instructions

Prepare the Crock Pot: Grease the inside of your crock pot with oil or cooking spray to prevent sticking.
Layer Ingredients: Begin layering the potatoes, onions, and grated white cheddar cheese in the crock pot. Start with 1/3 of the onions, 1/3 of the potatoes, and 1/3 of the cheese. Repeat this layering two more times, ending with a top layer of potatoes and cheese.
Make the Milk Sauce: In a large measuring cup or bowl, combine whole milk, heaping cornstarch, prepared yellow mustard, salt, and black pepper. Whisk thoroughly until the cornstarch is completely dissolved and mixture is smooth.
Pour Sauce Over Layers: Evenly pour the prepared milk sauce over the layered potatoes, onions, and cheese in the crock pot.
Cook: Cover and cook on high heat for 3 to 4 hours, or until the potatoes are tender when pierced with a fork and the sauce is golden and bubbly.
Rest Before Serving: Once cooking is complete, unplug the crock pot and allow the scalloped potatoes to rest for 20 minutes. This helps the sauce thicken and the flavors to meld before serving.

Notes

For uniform cooking, slice the potatoes evenly at about 1/8 inch thickness.
You can substitute yellow cheddar or a blend of cheeses if desired.
Use whole milk for a richer sauce; 2% milk can be used as a lighter alternative.
Do not skip the resting time, as it allows the dish to set properly and improves flavor.
Leftovers can be stored in an airtight container in the refrigerator for up to 3 days and reheated gently.

Prep Time: 20 minutes
Cook Time: 3 hours 30 minutes
Category: Side Dish
Method: Slow Cooking
Cuisine: American

Keywords: crock pot scalloped potatoes, slow cooker potatoes, creamy scalloped potatoes, Yukon gold potatoes, cheesy potatoes, easy side dish