Crock Pot Scalloped Potatoes Recipe
Introduction
Scalloped potatoes are a comforting classic, and this crock pot version makes it effortless to enjoy creamy, cheesy layers without heating up the kitchen. With tender Yukon gold potatoes and a rich cheddar sauce, it’s a perfect side dish for any meal.

Ingredients
- 3 lbs Yukon gold potatoes (about 6, sliced 1/8″ thick)
- 1 onion (thinly sliced)
- 3 cups whole milk
- 3 Tbsp heaping cornstarch
- 2 Tbsp prepared yellow mustard
- 2 1/2 tsp salt
- 3/4 tsp black pepper
- 8 oz white cheddar cheese (grated)
Instructions
- Step 1: Grease the inside of your crock pot with oil or cooking spray to prevent sticking.
- Step 2: Begin layering by adding one-third of the sliced onions, then one-third of the potatoes, followed by one-third of the grated cheese. Repeat this layering process two more times, ending with a layer of potatoes and cheese on top.
- Step 3: In a large measuring cup, whisk together the whole milk, cornstarch, yellow mustard, salt, and black pepper until smooth.
- Step 4: Pour the milk mixture evenly over the layered potatoes and cheese in the crock pot.
- Step 5: Cover and cook on high for 3 to 4 hours, or until the potatoes are tender and the sauce turns golden and bubbly.
- Step 6: Once done, unplug the crock pot and allow the scalloped potatoes to rest for 20 minutes before serving. This helps the sauce thicken and the flavors to meld.
Tips & Variations
- For extra richness, substitute half of the whole milk with heavy cream.
- Add minced garlic or fresh herbs like thyme for a flavor boost.
- Use sharp white cheddar for a more pronounced cheesy taste.
- Thinly slice the potatoes evenly to ensure even cooking in the crock pot.
Storage
Store leftover scalloped potatoes in an airtight container in the refrigerator for up to 3 days. Reheat gently in the microwave or in a covered dish in a 350°F (175°C) oven until warmed through. Avoid reheating on high heat to prevent drying out.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use different potatoes for this recipe?
Yes, you can substitute Yukon gold with Russet potatoes. Yukon golds are preferred for their creamy texture and even cooking, but Russets will also work well.
Is it necessary to use cornstarch in the sauce?
Cornstarch helps thicken the milk sauce, giving the scalloped potatoes a creamy texture. You can substitute with an equal amount of flour if needed, but be sure to whisk it well to avoid lumps.
Print
Crock Pot Scalloped Potatoes Recipe
- Total Time: 3 hours 50 minutes
- Yield: 6 servings 1x
Description
This Crock Pot Scalloped Potatoes recipe offers a creamy, cheesy, and perfectly tender potato dish that’s effortlessly made in a slow cooker. Layers of thinly sliced Yukon gold potatoes, onions, and white cheddar cheese are cooked in a flavorful milk sauce enhanced with mustard, salt, and pepper. Perfect as a comforting side dish for any meal, this hands-off recipe ensures a golden bubbly finish with minimal prep.
Ingredients
Potatoes and Vegetables
- 3 lbs Yukon gold potatoes (about 6, sliced 1/8″ thick)
- 1 onion (thinly sliced)
Milk 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 and ensure easy cleanup.
- Layer Ingredients: Start by layering one third of the thinly sliced onions, potatoes, and white cheddar cheese inside the crock pot. Repeat this process twice more, finishing with a final layer of potatoes and cheese on top.
- Make the Milk Sauce: In a large measuring cup or bowl, whisk together the whole milk, heaping cornstarch, prepared yellow mustard, salt, and black pepper until fully combined and smooth.
- Pour Sauce Over Layers: Pour the prepared milk mixture evenly over the layered potatoes, onions, and cheese in the crock pot.
- Cook the Dish: Cover and cook on high for 3 to 4 hours, or until the potatoes are tender when pierced with a fork and the sauce is golden and bubbly on top.
- Rest Before Serving: Once cooking is complete, unplug the crock pot and let the scalloped potatoes rest inside for 20 minutes to set and thicken before serving.
Notes
- Use Yukon gold potatoes for their creamy texture and ability to hold shape well during slow cooking.
- Adjust salt and pepper to taste if desired.
- You can substitute whole milk with 2% milk; however, whole milk gives a richer sauce.
- For a thicker sauce, increase cornstarch slightly but do not exceed 4 tablespoons to avoid a gummy texture.
- Allowing the dish to rest after cooking helps the sauce thicken and makes slicing easier.
- Make sure to slice potatoes thinly (1/8 inch) for even cooking and a creamy texture.
- 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, cheesy potatoes, easy side dish

