These slow cooker au gratin potatoes are the perfect side dish for any shindig you may throw this spring and summer. The beautiful thing about slow cookers is they rarely need your attention. Simply throw the required ingredients in and let your slow cooker transform edible elements into a tasty dish you and yours will savor. Save on cheese by printing this coupon:  $1.00/3 – Market Pantry Cheese, 5 oz or larger, Target Coupon – ( 

Slow Cooker Au Gratin Potatoes

1/2 white onion, chopped – $0.22
2 cloves garlic, minced – $0.08
5 Tbsp butter – $0.30
3 Tbsp flour – $0.02
1/2 tsp salt – $0.01
2 cups milk – $0.38
2 cups shredded cheddar cheese – $2.48
4 large russet potatoes, peeled and sliced into 1/4 inch pieces – $1.10


1. In a small saucepan, saute onions and garlic with 2 tablespoons of butter. Cook until onions are clear and set aside.

2. In a medium saucepan, melt remaining butter over medium heat. Mix in the flour and salt, and stir constantly with a whisk for one minute. Stir in milk. Cook until mixture has thickened. Stir in 1 1/2 cups of cheese all at once and continue stirring until melted, about one minute.

3. Layer 1/3 of the potatoes in the bottom of the slow cooker. Spread half of the onion/garlic mixture on top. Pour 1/3 of the milk mixture over the first layer and repeat with remaining onion and garlic, 1/3 of potatoes and 1/3 of milk mixture. Add the final layer of potatoes and cover it with the remaining milk mixture. Top with 1/2 cup of cheese, salt and pepper, then cover. Cook for 4 to 5 hours on high and serve.

Serves: 6 to 8

Total Cost: $4.59

Simple Slow Cooker Au Gratin Potatoes