Grandma Lois's Potato Casserole

Grandma Lois’s Potato Casserole is the ultimate comfort food, brimming with creamy, cheesy goodness and topped with a golden crunch. Perfect for family gatherings or holiday feasts, this classic recipe combines tender mashed russet potatoes with melted butter, sour cream, and a savory blend of cheddar cheese and cream of chicken soup. Finished with a buttery cornflake topping that adds a satisfying crisp, every bite delivers nostalgia and warmth. With just 20 minutes of prep time and simple pantry staples, this easy potato casserole is an irresistible side dish that complements everything from roasted turkey to baked ham. Don’t forget to bookmark this comforting crowd-pleaser for your next big meal!

Nutriscore Rating: 60/100

Prep Time:20 mins

Cook Time:50 mins

Total Time:70 mins

Servings: 8

Ingredients

• 6 medium russet potatoes
• 4 tablespoons unsalted butter
• 1 medium (diced) yellow onion
• 1.5 cups sour cream
• 1 can (10.5 ounces) cream of chicken soup
• 2 cups shredded cheddar cheese
• 1 teaspoon salt
• 0.5 teaspoon black pepper
• 2 cups cornflake cereal
• 3 tablespoons unsalted butter (melted)

Directions

Step 1

Preheat your oven to 375°F (190°C). Grease a 9x13-inch casserole dish with nonstick spray or butter and set aside.

Step 2

Peel the russet potatoes and chop them into roughly 2-inch pieces. Place them in a large pot, cover with water, and bring to a boil. Cook until the potatoes are fork-tender, about 15 minutes. Drain and let them cool slightly.

Step 3

While the potatoes are cooking, melt 4 tablespoons of unsalted butter in a skillet over medium heat. Add the diced onion and cook until soft and translucent, about 5 minutes. Set aside.

Step 4

In a large mixing bowl, combine the cooked onions, sour cream, cream of chicken soup, shredded cheddar cheese, salt, and black pepper. Mix well.

Step 5

Roughly mash the cooked potatoes (it’s okay if they are slightly chunky for texture) and stir them into the sour cream mixture until evenly combined.

Step 6

Transfer the potato mixture into the prepared casserole dish, spreading it out evenly.

Step 7

In a small bowl, mix the crushed cornflake cereal with the melted butter until well-coated. Sprinkle the buttery cornflakes over the top of the potato mixture in an even layer.

Step 8

Bake the casserole in the preheated oven for 30–35 minutes, or until the top is golden brown and the casserole is bubbling around the edges.

Step 9

Remove from the oven and allow the casserole to cool for 5–10 minutes before serving.

Step 10

Serve warm and enjoy! This dish pairs beautifully with ham, turkey, or any main course.

Nutrition Facts

Serving size	(2189.8g)

Amount per serving	% Daily Value*
Calories	3782.3

Total Fat 237.3g	0%
Saturated Fat 148.8g	0%
Polyunsaturated Fat 2.2g
Cholesterol 656.0mg	0%
Sodium 5753.8mg	0%
Total Carbohydrate 336.2g	0%
Dietary Fiber 22.3g	0%
Total Sugars 53.7g
Protein 112.6g	0%

Vitamin D 193.2IU	0%
Calcium 2494.1mg	0%
Iron 30.9mg	0%
Potassium 6401.4mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 54.3%

Protein: 11.5%

Carbs: 34.2%